Jennifer Aniston Opts For White Hot Glamour At AFI Life Achievement Award [PHOTOS]

America's sweetheart, Jennifer Aniston, made a surprise appearance at the 40th AFI Life Achievement Award in Culver City, Calif., on Thursday, in honor of actress Shirley MacLaine. But, the 43-year-old actress looked anything but sweet.

Aniston was white hot in a snow-white Burberry floor-length gown with a low, twisted bodice, thigh-high split and cut-out back. She finished off her look with Tabita Simmons sandals and a cream Valentino clutch. She paraded her amazing figure, revealing a hint of leg and lots of cleavage, in the stunning column dress. White suits Ms. Aniston quite well.

It took her a long time to even touch her salad because people kept coming up to the table to say hello and photographers kept coming by to take pictures, an onlooker tells Us Weekly. Eventually, Jen ended up eating her whole entree: grilled fish with shrimp and some mixed veggies.

This was the second red-carpet win for the actress this week. On Sunday, she attended the 2012 MTV Movie Awards, looking super sexy in a black leather, one-shoulder Valentino dress with Giuseppe Zanotti heels. She had her famous hair pin-straight and skin bronzed. Aniston took home a golden popcorn trophy for Best On-Screen Dirtbag for her role in Horrible Bosses.

Other fashion stars of the night included Katherine Heigl and Mena Suvari. Both actresses opted for sophistication. Heigl wore a thigh-high split black dress with metallic accents. Red lips made her look pop. Suvari looked gorgeous in an tiered, ivory halter dress with a black belt.

Check out photos from Thursday's AFI Life Achievement Award event.