‘Tis the spooky season.

Hollywood stars got into the Halloween spirit as celebrities dressed up to impress during the holiday.

Jennifer Garner, Kelly Clarkson, Selena Gomez and more channeled nostalgic, yet iconic movie characters, while other A-listers stepped out in original and unique costumes.

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Garner travels back in time in her iconic ’13 Going on 30′ costume.

Garner, 52, revived her nostalgic character, Jenna Rink, from the hit romantic comedy.

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She took to Instagram to recreate her role, wearing a butterfly necklace and twirling in her colorful dress to Whitney Houston’s “I Wanna Dance with Somebody.”

“Happy 20th Halloween, Jenna Rink,” Garner’s caption on social media read.

The beloved movie “13 Going on 30” was released in 2004.

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Say Kelly Clarkson three times and she appears as Beetlejuice.

The “Breakaway” singer transformed into Michael Keaton’s Beetlejuice character as she rocked the black and white striped suit, signature wild hair and creepy skin.

Clarkson incorporated the cult classic into her talk show by performing a version of “Banana Boat (Day-O),” the Harry Belafonte song that appears in the iconic scene in the original 1988 film.

Kelly Clarkson transformed for her talk show in Michael Keaton’s Beetlejuice. (Weiss Eubanks/NBCUniversal)

Luke Wilson reprized his famous role of Emmett Richmond in ‘Legally Blonde’, wearing essentially just a suit and tie.

Luke Wilson reprized his famous role of Emmett Richmond in ‘Legally Blonde’. (John Nacion/Getty Images)

Wilson, 53, made a surprise appearance on the “Today” show as host Savannah Guthrie dressed as Reese Witherspoon’s character Elle Woods.

Wilson made a surprise appearance on the “Today” show with host Savannah Guthrie dressed as Reese Witherspoon’s character Elle Woods. (John Nacion/Getty Images)

Former Disney star Selena Gomez dressed as Alice from Alice in Wonderland, along with friend Benny Blanco as the Mad Hatter.

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Anne Hathaway was a creepy version of the Big Apple.

The star of ‘The Princess Diaries’ took to social media to share her costume, as she wore a Statue of Liberty crown, a white wig, creepy makeup and a shirt that said ‘Boo York City’.

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Dolly Parton has prepared a sweet Halloween treat for the holidays.

Dolly Parton dressed up as a witch while she brewed something in the kitchen. (Dolly Parton/Instagram)

The “9 to 5” singer dressed up as a witch while sharing her Witches’ Brew Cider with her sister. Parton wore a floral witch hat and wore an orange and black dress decorated with fall leaves.

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Alec Baldwin and his family got into the Halloween spirit, dressing up as “Where’s Waldo.”

“Happy Halloween from the Bald-Waldos to you!” his wife Hilaria shared it on Instagram.

Alec has eight children and has been married twice. He married his current wife, Hilaria, in 2012, and the couple has seven children.

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Demi Moore was truly unrecognizable as she shared behind-the-scenes photos from her new film ‘The Substance’.

Moore plays Elisabeth Sparkle, a character who transforms into an enhanced version of herself as a laboratory provided her with a substance in the film.

Moore’s terrifying look included her wearing a bald cap, with a few gray hairs on her scalp. Her makeup showed many wrinkles and her body lay shriveled in her post. The last photo on Instagram showed Moore with blood all over her face.

Demi Moore was truly unrecognizable as she shared behind-the-scenes photos from her new film ‘The Substance’. (Demi Moore/Instagram)

Sami Sheen, 20, flew as a Victoria’s Secret angel this Halloween.

The daughter of Denise Richards and Charlie Sheen showed off her fit physique in daring white lingerie and large matching angel wings.

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She completed her look with a pink satin Victoria’s Secret dress and glittering heels.

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Heidi Klum’s 20-year-old daughter Leni dressed up as Pamela Anderson for the spooky holiday.

“Our version of Tommy and Pamela,” Leni’s Instagram caption read.

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The model wore a platinum blonde wig, standing next to her punk rock boyfriend.

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Kelly Osbourne’s costume was out of this world.

The English television personality wore a silver astronaut suit and helmet, while her son Sidney dressed up as an adorable neon green alien.

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Kelly Osbourne wore a silver astronaut suit and helmet. (Kelly Osbourne/Instagram)

Kelly Ripa showed up as a real Swiftie for Halloween.

Kelly Ripa dressed as Taylor Swift and her husband, Mark Consuelos, was NFL player Travis Kelce. (DISNEY/Jeff Neira/Gotham/GC Images)

The television host dressed as Taylor Swift, while her husband Mark Consuelos was NFL player Travis Kelce. The couple wore Swift and Kelce’s outfits during their performance at the US Open.

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