Supporting Joel Madden as he deejays the big night, the soon-to-be-married Nicole Richie goes for ’60s glam in her beaded, backless Reem Acra gown with long sleeves, Bally heels, Lorraine Schwartz blackened platinum jewelry and a high bun.

Supporting her nominated film Precious, Mariah Carey balances sexy and glam in her Valentino Haute Couture midnight-blue gown with a thigh-high slit, Judith Leiber clutch H. Stern diamond bracelet and Chopard diamond earrings.

The presenter is a vision of spring in her pastel-patterned Elie Saab Haute couture gown and Lorraine Schwartz diamonds.

Singer Marc Anthony and wife Jennifer Lopez wearing a Giorgio Armani Prive iridescent pale pink silk organza evening gown with a side train accented by Swarovski crystals.

Several of these young ladies made the “Worst Dressed” list this year. Do you agree?

Pictured: Amanda Seyfried, Mischa Barton, Maggie Gyllenhaal, Vera Fermiga and Zoe Saldana.

The Best Supporting Actress nominee is ravishing in red in her Donna Karan couture duchess satin pleated gown, Chopard jewels and soft updo.

Carrie would be proud! The fashionista dares again in her pale yellow Chanel Haute Couture gown with silver embroidery at the neckline, a dramatic retro bun and Fred Leighton jewels.

The always-sunny actress is all Hollywood glamour, from her gold-dusted Oscar de la Renta gown and her Cartier jewels, even down to her perfectly curled locks.