Britain's Prince William and his fiancee Kate Middleton smile following a Naming Ceremony and Service of Dedication for the Royal National Lifeboat Instution's (RLNI) new Atlantic 85 Lifeboat, the 'Hereford Endeavour', at Trearddur Bay Lifeboat Station, in Trearddur Bay, Anglesey in north Wales February 24, 2011. Prince William and bride-to-be Kate Middleton performed their first official engagement as a couple on Thursday, giving them an early taste of the life in the spotlight that awaits them. [Sina]