OOAK Beatnik Blues Poppy Parker and Matt Sutton Steffie (2009 Tribute) are modeling the outfit from the adorable Trina Turk Barbie, which is simply a must-have, if your dolls are beachcombers! The accessories are really nicely detailed (especially the bag), and the bikini fits Poppy perfectly.

You can see a few additional photos on Flickr, though I apologize for the grain. I took these at night, and the light was pretty dim.