Jennifer Aniston and Justin Theroux changed into their best Summer whites last night to attend the actress Christine Taylor's 40th birthday in Hawaii. Christine has been married to Ben Stiller since 2000. In the intervening years, both Christine and Ben have worked with Jennifer and Justin. Jennifer starred opposite Ben in 2004's Along Came Polly while he and Christine both had parts in Tropic Thunder, which Justin wrote. It was just Sunday that Jennifer and Justin arrived in Hawaii on their latest getaway together. The jet-setting couple have traveled between NYC, London, and LA over the past few months as well. The milestone of 40 is one Justin will soon reach, too — his birthday is coming right up on the 10th.