by Radar Staff
Jennifer Aniston finally went public with her romance with new beau Justin Theroux Wednesday night in London.
Jen – wearing a simple, but elegant black cocktail dress -- walked hand-in-hand with the dashing actor/screenwriter as they left an after-party at Shoreditch House following the UK premiere of her new dark comedy, Horrible Bosses.
It was the first time the twosome has been photographed together showing affection.
Earlier in the evening, Aniston walked the red carpet solo in a dazzling Valentino stone-grey cocktail dress at the London premiere of ‘ Bosses,’ in which she plays a sex-starved dentist who harasses her assistant.
Aniston, 42, and Theroux, 39, met on the set of the film Wanderlust, but they initially kept their budding romance a secret, as he had recently broken up with a long-time girlfriend.