The Pop/R&B outfit that brought you PCD in 2005 with a string of hits including “Don’t Cha,” “Stick wit u” and “Buttons” is expected to release their new single “When I Grow Up” May 20th. The Pussycat Dolls, led by former Eden’s Crush singer Nicole Scherzinger have lined up a string of appearances this month including the premiere of their new single on the Jimmy Kimmel Show and a performance on MTV’s upcoming 2008 Movie Awards airing June 1st. The Dolls’ as-yet untitled album is due for release late this summer featuring producers Sean “The Pen” Garrett, Scott Storch, Dark Child and Cee-Lo Green. Timbaland who worked on their debut is also expected to return on the group’s sophomore disc. PCD, The first album from the Dolls, sold over six million units worldwide.