Bosworth glittered in Gucci at the Superman Returns premiere in London. So You Think You Can Dance’s host took center stage in Hollywood.

Photo by DAVID LODGE/FILMMAGIC.COM;
JASON MERRITT/FILMMAGIC.COM

Duff shined in Cynthia Rowley at the Late Show With David Letterman in NYC. The costar of NBC’s Heroes belted the frock at an NYC event.

Photo by JOHN BARRETT/GLOBE PHOTOS;
BILL DAVILA/STARTRAKSPHOTO.COM

Madge rocked Dolce & Gabbana in Lisbon, Portugal. The Punky Brewster star put on the same purple leather jacket for an L.A. B-day bash.

Photo by RAMEY PHOTO AGENCY;
DAVID FISHER/REX USA

Tilly wore Dolce & Gabbana’s floral print for a Hollywood charity event. Huffman slipped into a floor-sweeping version in London.

Photo by MICHAEL TRAN/FILMMAGIC.COM; REX USA

Simpson hung out with her sister, Jessica, in Katy Rodriguez’s jumper in L.A. Cuthbert donned the dress sans shirt in Las Vegas.

Photo by SPIRIT PICTURES/WENN;
JEFF VESPA/WIREIMAGE.COM

Knightley dined out with beau Rupert Friend in Calvin Klein’s dress in London. Menounos wore the sheath at a film premiere in Hollywood.

Photo by AXELLE/BAUER-GRIFFIN.COM; X17AGENCY.COM