Once Upon a Breakout in Hollywood Spoilers

I still remember sitting there in the theater, July 2019, Cherry Mr. Pibb sweating in my hand, thinking I was about to watch Tarantino’s “nostalgic 60’s hangout movie.” You know the pitch: fading stardom, Bruce Lee memes, dirty feet, old songs. What if “Manson Murders” but Tarantino style? A little Hollywood navel-gazing before the whole streaming apocalypse swallowed us whole and COVID re-wrote daily life from the ground up.

What we didn’t know — what none of us knew — is that Once Upon a Time in Hollywood would end up being the prologue to the next wave of Hollywood superstardom.

This was supposed to be Tarantino’s penultimate film: a vibes-first elegy for a lost era — a revisionist epic about a tragedy we all wish never happened. Instead, it became a generational pipeline — quietly passing the torch from DiCaprio and Pitt to Margaret Qualley, Austin Butler, Mikey Madison, Sydney Sweeney, and Maya Hawke. Five actors who walked into this film unknown (or at least under-known), and walked out shaping the decade to come.

Twas an eruption of breakouts so volcanic, not a single pore on Tarantino's face could contain them.

VICTORIA THOMAS: THE STAR-WHISPERER

Let’s get one thing straight: this doesn’t happen without Victoria Thomas.

Thomas has been Tarantooni’s casting director since Django: Unchained, a six-time Artios Award winner with the kind of résumé (Hidden Figures, The Last of Us, Detroit) that makes most execs sweat through their linen shirts. She was also the one responsible for casting Cate Blanchett as Lilith in the Borderlands movie… but I think we can let that one slide given her mostly spotless track record. Hollywood though? That was her casting masterpiece.

Her approach to auditions was alchemic. Years-long slow burn scouting. Thomas had been tracking some of these kids since their failed auditions for other projects. Mix-and-match “chemistry labs.” Picture nine actors pretending to be Manson cultists, crawling across the floor, swapping roles mid-room while Tarantonio sits there barefoot, grinning like a cult leader himself.

Extra credit weirdness encouraged.

• Mikey Madison brought a painting, a poem, and a lock of her own hair.
• Margaret Qualley sang a Manson-penned folk song that ended up in the actual movie.
• Sydney Sweeney wrote a handwritten letter in character like she was auditioning for Hereditary: The Hippie Cut.

Thomas swears there was no grand plan. This wasn’t “we must mint the next movie stars.” But you jam this much eccentric energy into a Torontoni sandbox, light the match, and boom: the next generation detonates on impact.

MARGARET QUALLEY — “PUSSYCAT”

Margaret Qualley is probably the one most people’s minds go to first when they think of breakout performances in this film. She has the most screentime and she did the most with it — leaving the strongest impression.

For many others, the reaction would be “Wait… that was Austin Butler? That was Sydney Sweeney?” But for Margaret Qualley, it’s an undeniable and unforgettable performance in her filmography, and the explosion in her career after the release of this film is a testament to that very fact.

Her career was already bubbling by the time she made it onto Tranatiño’s set with roles in The Leftovers, The Nice Guys, Novitiate, Fosse/Verdon. Hollywood insiders knew her name; everyone else thought she was just Andie MacDowell’s daughter who danced funny in that Spike Jonze perfume ad.

But Hollywood was her true breakout, and she is the true breakout of Hollywood. Her screen presence was commanding. Her line deliveries were iconic. Her dogs were barking.

Tortelini almost missed out on her because he hadn’t watched her tape. Victoria Thomas flagged it, Tarentata hits play, and allegedly mutters: “I missed her. She’s Pussycat.” Then Qualley sits down with Pitt for an on-set chemistry read and the energy reportedly made the boom op weep.

Her Cliff Booth car ride is pure star-making cinema: barefoot on the dashboard, grinning like the devil in daylight, radiating feral danger. Qualley’s Pussycat is a living paradox — playful yet predatory, hypnotic yet hollow. The foot-lovin’ director frames her like a trap disguised as freedom. You know Cliff’s not gonna bite, but Qualley sells you the possibility anyway.

And look at her now! She’s a certified Cannes darling. In the years following, Qualley has made two films with both Yorgos Lanthimos and Ethan Coen, and worked under the direction of Claire Denis, Coralie Fargeat, Richard Linklater, and even Hideo freaking Kojima.

Once Upon a Time in Hollywood unlocked the power of Margaret Qualley. Now she’s Hollywood’s weird little weapon, and it won’t be long before she’s got her own major award under her belt like the two next stars in our list.

AUSTIN BUTLER — “TEX WATSON”

Did you know Austin Butler spent a decade mucking it up in Nickelodeon hallways before this movie? We’re talking Zoey 101, Hannah Montana, iCarly — a résumé built on canned laughter and 41 uncredited episodes of Ned’s Declassified School Survival Guide.

Thomas clocked him after rave reviews from his Broadway run in The Iceman Cometh with Denzel Washington. Tarentuba gives him fake Lancer sides (Topangatino loves his mystery games). Butler delivers them like he’s summoning a demon. Quinnie looks at Thomas and says: “That guy’s a movie star.” Bonus: the man already knows how to ride a horse.

Tex Watson isn’t showy — he’s a black hole of violence. Butler plays him as controlled dread: his stillness carries more weight than ten monologues. Watch the Spahn Ranch standoff — Pitt struts, the hippies buzz, and Butler? Butler vibrates at a different frequency. A movie star in low power mode, waiting for his next chapter.

And that chapter arrives fast.

Elvis, The Bikeriders, Dune: Part Two, Masters of the Air, Eddington, Caught Stealing. The man has not missed once since he got his cock and balls ripped off by Cliff Booth’s dog on August 8, 1969. His future projects look just as promising.

MIKEY MADISON — “SADIE”

Mikey Madison showed up barefoot in a vintage ’60s dress, handed Tarantulantino a poem, a painting, and a lock of her own hair. That’s either a red flag or a coronation. Guess which it was.

Sadie Atkins is the movie’s pressure valve. Hollywood's third act goes from dreamy melancholy to operatic chaos, and Mikey Madison is the gearshift. She weaponizes unpredictability — giggling, shrieking, completely unmoored from reality — and by the time she’s screaming through fire, you’re laughing and horrified at the same time. That’s some range.

Now, obviously Anora is Mikey’s true breakout performance, just like how Elvis was Austin Butler’s, but she wouldn’t have been cast in Scream without Hollywood, and she wouldn’t have been cast in Anora without Scream. So, considering how miles above her prior projects this film was at the time, I’ve gotta include her on the list.

Madison went from Spahn Ranch hippie to Oscar winner in five years. Not too shabby if I dare say so myself.

SYDNEY SWEENEY — “SNAKE”

Before she was trying to hold back tears in the school bathroom, selling jeans to white supremacists, and attending billionaire weddings in Venice, Sydney Sweeney answered the door at Spahn Ranch for about three minutes, and somehow still became the face of Gen Z’s pop-cultural hunger games.

Now, she definitely doesn’t have the most consistent filmography as some of the others on this list, but she definitely holds a lot of weight culturally within the Zoomer canon.

Prior to Once Upon a Time in Hollywood, she’d made single-episode-appearances in a number of network television shows, dating all the way back to Heroes and Criminal Minds back in 2009 when she was only a pre-teen. She’d appear in a number of indie shorts and VOD flicks until 2018 where she earned recurring character roles in The Handmaid’s Tale, Sharp Objects, and a main role in Everything Sucks!

She auditioned for Lulu, and landed Snake. Showed up with a handwritten in-character letter. Built a vision board. She literally manifested this role. Snake barely speaks, but she registers. Thomas called her “nubile, hippie-ish,” and she floats through the film like set decoration that looks back at you — a face burned into the film’s iconography through that dusty screen door.

Then the Euphoria timeline detonates: Euphoria premieres a month after Cannes, Sweeney instantly becomes a meme factory. And of course, we can't forget her part in The White Lotus S1.

Since then, Sydney Sweeney has appeared in a number of flops and a few decent movies (from what I’ve heard — I haven’t watched most of them). Will she ever be more than “The Blonde Girl With Big Tits?” That remains to be seen, but it seems like she’s more than happy to be typecast as such (at least for now).

With all the “controversy” coming out about her lately amidst the political tensions of the USA, the dwindling anticipation for Euphoria S3, and a number of ill-received films in quick succession this summer, it’ll be interesting to see where her career goes from here.

MAYA HAWKE — “FLOWERCHILD”

Maya Hawke films her audition tape with dad Ethan Hawke. Sends it in. Squarentino calls back. Within weeks, she’s barefoot at Spahn Ranch. Nepotism accusations start loading. Then she actually shows up on-screen and nails every single beat. She’s got the anxious gal nailed down pat — probably why she ended up voicing the role of Anxiety in Inside Out 2.

Flowerchild is the Linda Kasabian analogue who bails before the bloodbath. It’s a tiny moment, but Hawke infuses it with a soft, wide-eyed humanity that lands harder than dialogue. Her absence shapes the finale’s chaos. Quentantino uses her hesitation as a narrative ripple: even within the cult, choice exists.

After Cannes, Stranger Things S3 drops weeks later, making her a household name, and proving she’s not JUST the child of two fantastic actors, but also has the chops herself.

Since Hollywood, she’s also appeared in Fear Street P1, Asteroid City, Maestro, Do Revenge, and narrated Alex Ross Perry's documentary, Videoheaven. It’s also worth noting she’s carved out a nice little music career for herself as well, earning half-a-million monthly listeners on Spotify since her first single released in August 2019.

Pretty soon we’ll see her closing out the final season of Stranger Things before headlining the next Hunger Games.

TOOTERTINO’S UNINTENTIONAL MAGIC TRICK

Tinotaran made a movie about fading stardom. Victoria Thomas filled it with five (relatively) unknowns. Together, they accidentally built the next generation.

This isn’t even counting Victoria Pedretti, who landed the part Sweeney auditioned for; Julia Butters, whose scene-stealing performance as Trudy Fraser earned a hand-picked spot in The Fablemans; and even Billie Eilish auditioned for a role at 16, but didn’t get it — though she ended up winning an Oscar three years later for No Time To Die (and again two years later for Barbie)..

This wasn’t the Marvel Machine or the Netflix Meat Grinder. It wasn’t engineered. It was chaos, intuition, and vibes. Tanangatino loves “movie moments” — the alchemy where performance + frame + energy become something eternal and otherworldly. Hollywood is that, but stretched across five careers at once.

It was supposed to be a fairy tale. Turns out, it was an origin story.