Left pic courtesy Getty Images for LTLA

Arianna Huffington hosted a luncheon at her Los Angeles home on Tuesday to celebrate Jennifer Aniston's new film Cake, and the 45-year-old actress happily posed for photos with fiance Justin Theoroux. Other guests included Aniston's BFF Chelsea Handler, her former Friends co-star and pal Lisa Kudrow, along with Nia Vardalos and Salma Hayek.

Later in the day Aniston attended a Q & A at Harmony Gold on Sunset Blvd, and she chatted about her role in the film, which has already earned her some serious Oscar buzz (not to mention a Golden Globe nomination).

During a recent chat with the Los Angeles Times, Aniston revealed that she was perhaps a bit worried about taking this gig after being known for her work on sitcoms and rom coms. "It is a risk, especially if you’re me and you’re so know," she said. "I’m fighting through being in your living room for 10 years, every week — every day — and being known as one person. That’s a hard shell to shake for an audience and for an industry that’s got to make money on this. People have got to believe it."