Which Ageless A-lister Looked Hottest This Week?

Stylish stars of all ages hit the red carpet for various premieres and parties this week, but three A-list ladies who happen to all be in their 40s really brought their A game. Only one can be at the top of the best dressed list, so vote for the look you loved most.

First up is Jennifer Lopez, who continues to practice her hot divorcee style in skin-baring ensembles. At PURE nightclub in Las Vegas on Sunday, the 42-year-old star wowed in a Camilla and Marc 'Protean' mini, which she paired with bright pink Jimmy Choo 'Kiln' embellished shoes to highlight the fluro pink stripe in the dress.

Next is Jennifer Aniston, whose romance with motorcycle-riding, leather jacket-clad Justin Theroux has caused her to add a little edge to her wardrobe. The 42-year-old star sexed things up and showed off her lacy black bra from beneath her Dolce & Gabbana tailored pantsuit at Lifetime's Five screening in NYC on Monday.

Lastly, is Elizabeth Hurley, who has had quite the busy week. Not only did the 46-year-old actress make her debut on Gossip Girl during its Season 5 premiere on Monday, but she's also kicking off Estee Lauder's Breast Cancer Awareness campaign along various stops in England. On Thursday, she brightened things up in the cause's official color and donned a fuchsia Michael Kors form-fitting number.