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Victoria Beckham has proven she's a top-notch designer, turning out curve-enhancing creations that celebs like Kim Kardashian and Kate Winslet love to wear.

And on Monday, Michelle Williams debuted a whimsical look from Posh's girlie new dress line Victoria, Victoria Beckham at the Academy Awards Nominations Luncheon in Beverly Hills, Calif.

PHOTOS: See what the stars wore last night

The sleeveless collared ivory sheath dress featured puffy blue clouds and sequin rain drops. Instead of Beckham's signature tight-fitting silhouette, the garment hung loosely on the My Week With Marilyn actress' thin frame.

"All of the pieces are fun," Beckham told Us Weekly of her latest deigns. "They make you smile."

Tell Us: Would you wear Michelle's cloud dress?