Hilary Duff looks back at 'Casper Meets Wendy' 20 years later

Hilary Duff is diving into some '90s nostalgia for her Halloween inspiration.

The 29-year-old actress took to Instagram on Monday to show just how much she's grown up since appearing in the 1998 direct-to-video Halloween family film, "Casper Meets Wendy."

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Duff, who starred as Wendy, "The Good Little Witch," shared a side-by-side pic of her character in the film and what Wendy would look like nearly two decades later.

"Well just in time for Halloween @snapchat gave me this little treat of a filter, Duff, who was 12 when she shot the film, captioned the pic. "#caspermeetswendy #wendythegoodwitch #20yearsago?! #ahhhhhhh."

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On Monday, Duff also shared a photo of her 4-year-old son, Luca, who she wrote is "basically an adult" already.

An error occurred while retrieving the Instagram post. It might have been deleted.

Duff, who shares her son with ex-husband Mike Comrie, has been spending some quality time with her new beau (and personal trainer) Jason Walsh, and even shared a romantic black-and-white PDA-filled selfie with Walsh on Sunday.

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