Jennifer Aniston Begins Shooting New Comedy in Miniskirt

Credit: DE LA CRUZ/Most Wanted Pictures

She's got legs!

Jennifer Aniston
, 41, began filming her new comedy, Just Go With It, in Beverly Hills Saturday.

See how Jen's bikini body has changed over the years!

The actress donned a skin-tight, short cream dress that accentuated her curves.

And despite her new flick The Bounty Hunter coming in a dismal third place at the box office over the weekend (behind Alice in Wonderland and children's flick Diary of a Wimpy Kid), she was all smiles while shooting scenes with Adam Sandler and Brooklyn Decker.

Who is Jen's celeb bff?

Aniston plays a single mother who pretends to be Sandler's soon-to-be-divorced wife while he pursues Decker. The comedy, which hits theaters in February 2011, was originally named The Pretend Wife.

Not spotted on set: Heidi Montag, who filmed her cameo last week and Twittered that it was the "best day of my life!"

See how Jen looks like before and after a recent nose job

Upon finding out the reality star -- who has gotten more than 10 plastic surgery procedures -- had a bit part, Aniston diplomatically said, "That's interesting and fun."