Jessica Biel smiled big as she walked through Heathrow Airport this morning. Jessica's been popping up all over the place lately, including on the cover of Elle, as she preps for next week's release of New Year's Eve. It was her personal life that brought her to the GQ Men of the Year Gala in LA last month since her on-again boyfriend Justin Timberlake was honored by the men's magazine. The couple have been spending time together since reuniting over the Summer, but they've yet to comment on the status of their relationship. In November, Justin took a break from Jessica to attend the Marine Corps Ball with another lucky lady, Corporal Kelsey DeSantis, who he accompanied to the event in Richmond, VA after accepting her YouTube invitation.