The super-mum poses in a saucy new beach layout.

In case you were wondering, yes, yummy mummy KATE MOSS is still in swimsuit-model shape and posing in the flawless new black-and-white spring ad campaign for DAVID YURMAN jewelry, shot by PETER LINDBERGH. The slim supermodel is seen lounging on the beach in a black one-piece with a 70-inch strand of Tahitian pearls around her neck.

Also posing in the seductive ads are models DARIA WERBOWY and NATALIA VODIANOVA. (You can see video of the photoshoot at www.davidyurman.com.)

As for Kate, she just wrapped up a trip to L.A. complete with a stop at Disneyland and Universal Studios theme parks for daughter LILA, 5. Next, she's rumored to be shooting a new campaign for AGENT PROVOCATEUR's bridal line.