In the past couple weeks I've been seeing the beautiful Jennifer Aniston everywhere. There's no denying that she's looking fabulous lately.

On March 15, the former Friends star frolicked on the beach outside the Mandarin Oriental Hotel, clad in little more than a teeny pink string bikini, thumbing through magazines and snacking on berries and salad. "She was smiling and giggling with her friends," an eyewitness tells OK!. "Her butt looked amazing!"

Jen's amazing physique is not the only thing stopping traffic these days. Friends say the actress is noticeably more calm and happy with herself; something they say clearly radiates from the inside.

Learn Jen's 10-step plan for getting her best body back in the newest issue of OK! magazine available tomorrow!