Leighton Meester's new song with Robin Thicke. [YouTube]
Twitter's "Tweservations" service launched in San Francisco. [GrubSt]
Prince Harry and Chelsea Davy out in public. [People]
Cynthia Rowley will design new uniforms for United Airlines. [Racked]
Steven Tyler may split from Aerosmith. [EOnline]
Carrie Prejean's mom saw her sex tape. [TMZ]
