Rebecca Rittenhouse | Entertainment News, Photos, and Videos

Chace Crawford blows out the candles on his cake with Blood & Oil co-star Rebecca Rittenhouse right by his side at his 30th birthday dinner and roast at The London Hotel on Saturday (July 25) in West Hollywood, Calif.

The 30-year-old actor – whose actual birthday is on July 18 – was joined by celebs including Gossip Girl co-star Ed Westwick, Caroline Wozniacki, Kevin Zegers, Zelda Williams, Ryan Rottman, Lucas Grabeel, JC Chasez, Matt McGorry, Tobey Hemingway, Jordan Masterson, Jessica Szohr, Scotty McKnight, and more!

The event, which was sponsored by Freixenet Spanish Cava and River Virtual Reality, was hosted by quarterback Tony Romo (his wife Candace is Chace‘s sister) and Eric Podwall.

10+ pictures inside of Chace Crawford celebrating his birthday…More Here! »

Chace Crawford and Rebecca Rittenhouse go casual while stopping by Hugo’s Restaurant for lunch on Tuesday afternoon (June 30) in West Hollywood, Calif.

The 29-year-old actor and the 26-year-old actress are working together on the new ABC series Blood and Oil, which premieres this fall.

PHOTOS: Check out the latest pics of Chace Crawford

You might recognize Rebecca from her work on the short-lived but beloved Fox series Red Band Society, which aired this past season.

The co-stars were spotted out for dinner in West Hollywood last week and they also caught a performance of Finding Neverland together back in May.

FYI: Chace is wearing a Junk Food t-shirt.

30+ pictures inside of Chace Crawford at lunch with Rebecca Rittenhouse… More Here! »

Ed Westwick and Chace Crawford suit up and look super suave while walking the carpet at the 2015 ABC Upfront presentation on Tuesday (May 12) at Lincoln Center’s Avery Fisher Hall in New York City.

The guys were there to promote their new shows, Wicked City and Oil, respectively. Ed‘s co-star Erika Christensen and Chace‘s co-star Rebecca Rittenhouse were also there!

Also in attendance at the event were How to Get Away with Murder stars Aja Naomi King, Alfred Enoch, Jack Falahee, Matt McGorry, Karla Souza, Charlie Weber, Liza Weil, and Billy Brown.

Oil will air on Sunday nights at 9/8c starting this fall while Wicked City will become a mid-season replacement. How to Get Away with Murder will stay in its Thursday night time slot.