Michelle Williams in Prada at the premiere of 'Oz the Great and Powerful' in LA

She might play a witch in the movie, but Michelle Williams kept it elegant and demure at the premiere of 'Oz the Great and Powerful', held in LA. She dressed up in a Prada design of a floral ankle length look with short sleeves and a side split that went up the waist and exposed her black underwear. The slight loose fit look with silver floral details and a neckline that went up high, made Michelle gorgeous. Embellished T-strap heels and a black clutch completed the look for the actress, who plays Glinda, the Good Witch. Check out Michelle in a cropped denim jacket in New York last summer.