The Pop/R&B outfit that brought you PCD in 2005 with a string of hits including âDonât Cha,â âStick wit uâ and âButtonsâ is expected to release their new single âWhen I Grow Upâ May 20th. The Pussycat Dolls, led by former Edenâs 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 MTVâs upcoming 2008 Movie Awards airing June 1st. The Dollsâ as-yet untitled album is due for release late this summer featuring producers Sean âThe Penâ Garrett, Scott Storch, Dark Child and Cee-Lo Green. Timbaland who worked on their debut is also expected to return on the groupâs sophomore disc. PCD, The first album from the Dolls, sold over six million units worldwide.