GOSSIP NEWS >> Leighton Meester: "I Hate You, Dad" First Look!

Hard at work on her latest project, Leighton Meester was spotted on the Boston set of the movie "I Hate You, Dad" on Monday afternoon (June 20).

In what was her first day of filming on the Adam Sandler-fronted project, the "Gossip Girl" actress grabbed a quick snack of Tostitos and salsa during a break between takes.

Directed by Sean Anders and John Morris, "I Hate You, Dad" is about "a disagreeable father who moves in with his son before he's about to get married."

Due in theaters on June 15, 2012, the comedy also features Will Forte, Susan Sarandon, Milo Ventimiglia and James Caan.