Surprise! Kate Winslet is a married lady once again. On Dec. 26, the Oscar winner's rep confirmed to Peoplethat the star tied the knot with Ned Rocknroll -- Richard Branson's nephew -- in early December. "I can confirm that Kate Winslet married Ned Rock'nRoll in NY earlier this month in a private ceremony attended by her two children and a very few friends and family," the rep says. "The couple had been engaged since the summer." According to the magazine, the happy -- and very sneaky! -- couple, who have been together since fall 2011, even kept the top-secret ceremony from their parents. Somebody who was reportedly in the know? Leonardo DiCaprio, who is believed to have given away the bride (his Titanic costar) during this covert affair. This is the third marriage for Winslet -- who was previously hitched to directors Sam Mendes and Jim Threapleton -- and the second for her groom.