Alexander Skarsgard's 'Diary' Premiere Drag Was Homage to 'Rocky Horror' and San Francisco Drag Scene

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The moment Alexander Skarsgard stepped out in full drag,
with Farrah Fawcett-inspired hair at The
Diary of a Teenage Girl
premiere in San Francisco, it went viral.

Two days later, everyone is still gushing over the True Blood actor’s head-to-toe makeover,
even his Diary co-star, 23-year-old
Bel Powley. “He looked amazing,” the actress tells ETonline during an interview
at the Crosby Hotel in New York City.

NEWS: Alexander Skarsgard Works the Red Carpet in Full Drag at 'Diary of a Teenage Girl' Premiere

While many speculated as to why Skarsgard stepped out in
drag, Powley reveals it was nothing more than an inside joke between the two
actors and the film’s director, Marielle Heller.

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In fact, they were paying tribute to the city where Diary
was filmed and to the drag queens -- including first assistant director Brian
Benson aka Cousin Wonderlette -- who worked on and appeared on screen during a
Rocky Horror theater scene. “I feel like I’ve gotten to know all of those drag
queens now -- like Lady Bear and Peaches Christ, who is amazing,” she says, adding
that Benson is “a prolific” performer. 

WATCH: Kristen Wiig and Alexander Skarsgard Share a Kiss in Exclusive 'Diary of a Teenage Girl' Clip

”So we were like, let’s get them all together and do [the
premiere] at The Castro,” Powley explains. “I’ll dress in femme drag and he’ll
dress in real drag. It’ll be hilarious. It was just something we were doing for

The party didn’t stop after the premiere. Powley and others continued
the fun
at the Oasis, a gay cabaret nightclub, where Skarsgard was joined by
the city’s other queens, including Heklina.

“It didn’t feel like a stuffy, serious premiere,” Powley

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No, it certainly doesn’t sound like it.

The Diary of a Teenage
-- starring Powley as Minnie, a 15-year-old girl who discovers her
sexuality through a relationship with her mother’s boyfriend, Monroe
(Skarsgard) -- opens in theaters on Friday, Aug. 7.