Blake Lively Beverly Hills red jacket blonde

Blake Lively has left the Upper East Side (and Leonardo DiCaprio, for the moment) and headed for the hills!

The 23-year-old was spotted filming Gossip Girl scenes with co-star Kaylee DeFer in Beverly Hills, CA Friday ... far from her usual Big Apple hot spots!

While a few of Blake's co-stars like ex Penn Badgley are still in New York City, Blake has been filming in Los Angeles with Kaylee, Ed Westwick and Chace Crawford all week.

It's no surprise that the actress who plays Serena van der Woodsen looked as stylish as ever in character, sporting a bright red cropped blazer, blue-and-white striped tank top, floral pleated skirt, turquoise handbag and gold accented drop earrings. We're kind of surprised about the casual blue-and-gold flip flops though - not a Serena staple, but the whole outfit is so cute look that we'll let it slide.

Between scenes, Blake was spotted in a white bathrobe. A girl's got to stay comfy!

See more of Blake's outfit ... after the jump.