Jennifer Garner is celebrating Halloween by embracing her inner 13-year-old self.

On Wednesday, Oct. 30, the 52-year-old actress posted a video on TikTok and Instagram of herself replicating the getting ready sequence from her 2004 smash film.

Garner used lip gloss before applying retinol cream, powder, and eyeliner, all while playing Whitney Houston’s song “I Wanna Dance with Somebody”—the same tune featured in the film. She also wore her spectacles to help her apply the eye makeup.

The actor, who played Jenna Rink in the film, then looked perplexed at what appeared to be a pair of Spanx.

At the beginning of the video, Garner donned a white silk robe before transitioning to the same colorful outfit Jenna had worn to her work party in the romance.

@jennifergarnerHappy 20th Halloween, Jenna Rink. 💕

♬ I Wanna Dance with Somebody (Who Loves Me) – Whitney Houston

Before leaving her restroom, Garner turned around, clad in a dress, long white stockings, dark pink sneakers, and a dark gray purse.

She also wore the same butterfly necklace as her character in the film, along with small hooped earrings.

“Happy 20th Halloween, Jenna Rink,” the caption said.

“You will always be Jenna Rink to me,” one person wrote. “I first watched 13 Going on 30 when I was 13 and celebrated my 30th birthday this year.”

A second person said, “My inner child got so giddy seeing you in the dress.”

13 Going On 30 tells the story of unpopular student Jenna Rink, who dreams of being “30, flirty, and thriving” on her 13th birthday. She then awakens as a 30-year-old lady, living the life she had always desired.

The film also stars Mark Ruffalo, Christa B. Allen, and Judy Greer.

Garner, Ruffalo, 56, and Greer, 49, reunited in April to mark the 20th anniversary of the romantic comedy. The trio uploaded the same recorded video conversation to their Instagram profiles, captioned “13 Going on Boomer.”