Kate Hudson and Matthew Bellamy checked out an antique fair in Buenos Aires with Ryder on Sunday. Kate was armed with her camera to snap pictures of their adventures when she and Matthew weren't busy showing PDA. The threesome were spotted on Saturday sharing a similar outing, which included a casual dinner and lots of kisses. Kate, Matthew, and Ryder have plenty more time to enjoy South America since Matthew doesn't take the stage with Muse again until this weekend, when they perform in Sao Paulo, Brazil. Kate will also have to get back to work soon ahead of the May release of Something Borrowed, and if you're a big fan today is your last day to enter to win a trip to meet her in LA!