Reese Witherspoon covered up in a black coat as she left Claridge's hotel in London yesterday. She traveled to the UK to premiere This Means War with her costars Tom Hardy and Chris Pine ahead of the movie's Valentine's Day release in that country and the US. Reese wore a sparkly green Louis Vuitton dress for the event and posed for the cameras next to her leading men. She's had girls time during her overseas stay, too, since she popped up in Paris last week with friends. Reese and her pals went shopping and were spotted jogging around the city before Reese made the trip to England.