How does one get on People magazine's annual ''50 Most Beautiful People'' list? This year, it helped to be ubiquitous, and it helped to be part of a twosome. The 15th annual list, released Wednesday, includes several buy-one-get-one-free combos, starting with cover girl Jennifer Aniston and husband Brad Pitt. (Both have made the list four times.) Also on the list are newlyweds Nick Lachey and Jessica Simpson, siblings Mary-Kate and Ashley Olsen, models Alexandra and Theodora Richards (the teenage daughters of Rolling Stone Keith Richards and model Patti Hansen), ''Kill Bill'' antagonists Uma Thurman and Lucy Liu, and X-Men Hugh Jackman and Halle Berry, who makes her eighth appearance on the list, tying the record set by Julia Roberts.
Honorees who were apparently not on the beauty radar in previous years include ''The O.C'''s Mischa Barton, ''The Passion of the Christ'''s Jim Caviezel, ''The Apprentice'' runner-up Kwame Jackson, ''The Last Samurai'' Oscar nominee Ken Watanabe, ''Vegas''' Josh Duhamel, ''Mean Girls''' Lindsay Lohan, ''The L Word'''s Jennifer Beals, MTV News correspondent Suchin Pak, and OutKast's Andre 3000. A fuller list is available at People's website. (People, EW.com, and AOL are all part of Time Warner.) The ''50 Most Beautiful'' issue hits newsstands on Friday.