Jennifer Aniston was named the new spokesperson for Living Proof hair care products today. She's also investing in the brand, giving her the title of co-owner, and has additional responsibilities that include creating new products as well as marketing. Jennifer's hair isn't the only thing grabbing attention, though, since her new engagement ring is on display in the promotional images from the company. Jennifer got engaged to Justin Theroux in August, and she finally revealed the rock during a trip to Santa Fe over the weekend. The bauble is causing a stir for its size, though no details about the diamond have been released.