PHOTOS: Jennifer Aniston Gets Piggy For Her Birthday

Feb. 12 2011, Published 11:17 a.m. ET

She's known for celebrating her birthdays in style with a select group of lucky friends, and Jennifer Aniston isn't disappointing for her 42nd, RadarOnline.com can reveal.

The actress kicked off the festivities Friday night by having dinner at The Spotted Pig in New York with a group of pals, including her Just Go With It co-star Adam Sandler.

And the fun has only just begun.

Jennifer is off today on a group trip away to continue the party, as she did last year for her 41st when she headed to Los Cabos in Mexico.

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She was joined then by best friends Courteney Cox, David Arquette, Sheryl Crow (with whom she shares a birthday) and Scottish hunk Gerard Butler.

And despite it being her birthday week, the svelte star has no intention of slacking on her workout routine.

"Get up, have breakfast, have a workout, do something great outside," Jennifer told People of her daily agenda.

"Yeah, I know, exercising is annoying. But that way you feel great. If you’re consistently working out, your metabolic rate is constantly at a level where it’s kind of burning."