Fri, 16 Dec 2011 21:50:05 +0100 (Reuters) - Singer Britney Spears and boyfriend her Jason Trawick arrive at the 2011 MTV Video Music Awards in Los Angeles in this August 28, 2011 file photo. Celebrity media outlets reported the couple is engaged on December 16, 2011, after the singer posted a message on Twitter about receiving "the one gift" for which she has longed. REUTERS/Danny Moloshok/Files (UNITED STATES - Tags: ENTERTAINMENT) (MTV-ARRIVALS)