Happy birthday, indeed.

Jennifer Aniston helped BFF Courteney Cox celebrate her 45th birthday Tuesday night at Bouchon Beverly Hills. Also at the fete: pal Laura Dern and four other pals, a source tells UsMagazine.com.

Unlike the Cobb salad Cox and Aniston dined on every day for 10 years while taping Friends, the birthday girl chowed down on steak. Both she and Aniston — who was dressed down in jeans, a loose brown tank top and a beaded necklace — drank red wine, the insider tells Us.

“The group sang happy birthday to Courteney and they cheers-ed a few times,” says the source. “They all seemed to be laughing and having a great time.”

Aniston even put up with an overzealous fan who “grabbed her pretty obnoxiously,” the source notes. “[The fan] asked her to take a picture with her. Jennifer kindly took the picture though everyone couldn’t believe how she grabbed her. But Jennifer was very sweet about it.”

The group wrapped up with dessert around 10:45 p.m