Rachel Bilson & Zachary Levi get CHUCK-ed

Yippee Skippy!

More Rachel Bilson and Zachary Levi pictures have turned up… both of them “in costume.” The possible on-screen lovebirds filmed scenes for NBC’s sci-fi action-comedy Chuck in West Hills, Calif. on Friday. Last night, pictures of Rachel arriving on set surfaced.

Rachel was dressed in an uber cute white dress and black cardigan and two-toned Marc Jacobs ankle-strap pumps. She definitely dressed the part for a possible love interest for geek-turned-government-agent Chuck (Zachary Levi, pictured). It’s not hard to imagine as Chuck as The O.C.‘s indie cutie Seth Cohen (Rachel‘s on-and-off-screen romantic interest).

And how cute! Rachel brought along her 5-year-old sister Hattie on the Chuck set!

Yvonne Strzechowski was also spotted on set. She stars as top CIA agent Sarah Walker, who becomes Chuck’s partner.

All new-episodes of Chuck air on Mondays @ 8PM ET/PT, leading out Heroes every week.