Jennifer Aniston celebrated another year of success and joy. On Sunday, the "Horrible Bosses" actress turned 49 years old, just days ahead of Valentine's Day. According to an insider, there a lot of things to celebrate for Aniston. Aniston and her husband, Justin Theroux, have a busy year ahead. Aniston is reuniting with Reese Witherspoon for a new Apple TV series. Meanwhile, Theroux stars in the comedy film "The Spy Who Dumped Me" in Budapest, People reported.