Reality TV vixen Heidi Montag was photographed Monday on the Malibu, California set of her film Just Go With It, and RadarOnline.com has all the pics for you.

PHOTOS: Heidi Montag Shoots A Scene In Malibu

Just Go With It marks The Hills star’s first role in a film, and she is joined by an impressive cast of co-stars, including Jennifer Aniston, Nicole Kidman and Adam Sandler!

Heidi, 23, Tweeted later in the day: “I just had The Best day of my life filming my first comedy movie!!!!! It was beyond what I could have ever dreamed!!!!! … And I am wearing my sailor shorts I designed in the movie!!!”

VIDEO: Heidi Montag’s New Manager “Shifts Energy” And Will Read Your Mind

The film hits theaters next year.