Hudson joined Wilson, 39, and his parents for a lunch at Lario's on South Beach Saturday afternoon. "The four of them sat away from the crowds and had a blast," says a source at the restaurant, which is owned by Gloria Estefan and her husband Emilio Estefan, Jr. "Kate and Owen looked very happy and were talking up a storm to Owen's parents."
Following their meal? A birthday cake of course! "They asked for a tres leches butter cake soaked in milk with a candle in the middle," says the source.
By nightfall, Hudson – who came to Miami on a break from shooting Bride Wars in Boston – stepped out with Wilson and some of Kate's girlfriends, as they kept the party going with dinner at Ago at the Shore Club. The lovebirds then walked hand-in-hand to Skybar at the Shore Club, where they lounged and partied poolside on a bed. The pair chatted with each other, shared kisses and "were very sweet looking, it was super lovey-dovey," according to one onlooker.
Wilson remains in Florida shooting Marley & Me with Jennifer Aniston and Eric Dane.