Prom Has Changed A Lot Since You Went. Lily Rose Depp Is Proof.

Jamie Feldman

While you're looking back at prom photos thinking, "What was I thinking?" like Rachel and Monicafrom "Friends,"Lily-Rose Deppattended her prom in a timeless gown more fit for an awards show than a high school dance.

Depp attended prom in Los Angeles on Sunday alongside Harley Quinn Smith, the daughter of director Kevin Smith, with whom she co-stars in his new movie "Yoga Hosers." The doting dad was on hand for pre-prom festivities and, lucky for us, he shared a photo of the two lovely ladiesall dressed upand ready to go:

Last night, the @yogahosers went to Prom! @harleyquinnnn_ & @lilyrose_depp had dates of course but (ever on guard for thee) they were there strictly to chew bubble gum and squish Bratzis! And from all reports, they were all out of bubble gum... #harleyquinnsmith #lilyrosedepp #yogahosers #thecolleens #prom #losangeles #harleyquinn

A photo posted by Kevin Smith (@thatkevinsmith) on Jun 5, 2016 at 12:39pm PDT

Quinn looked a little more like a teenager in a sleeveless black gown that gathered in front, which she wore with a gold clutch. Depp, who left herhoodie at home but brought her keenmodeling chops, wore a nude slip dress that appeared to be crushed velvet.

The one giveaway that this was prom and not a big Hollywood event? Depp dutifully held her cell phone in her hand. "All the better to snapchat with," she probably thought.

Kind of puts your big, pouffy gown to shame, eh?

This article originally appeared on HuffPost.