But before you go thinking she's cut her famous hair, the former Friends actress was actually wearing a wig on the set of the New York-based movie.
Jennifer was seen laughing with crew members between takes and shielding herself from the harsh sun under an umbrella.
The movie also features Jen's old Marley & Me co-star Owen Wilson, who was spotted on set yesterday. Fingers crossed it won't make us sob as much as that doggie-centric film did.
In Squirrels To The Nuts, Owen plays a married Broadway director who meets a prostitute-turned-actress and decides to help her with her career. Will that turn out to be a mistake?
Jennifer jetted back to New York this week after attending a wedding with fiancé Justin Theroux in Ojai, California.
The couple joined Hollywood royalty including Matt Damon, Ben Affleck and Jennifer Garner to watch comedian and talkshow host Jimmy Kimmel tie the knot with writer Molly McNearney.