Credit: Jamie McCarthy/WireImage.com

At the NYC premiere of Harry Potter and the Deathly Hallows, Part One, on Tuesday, Emma Watson, 20, walked the red carpet in a custom dress by Calvin Klein.

"I asked them to make it for me," Watson told UsMagazine.com. "I love Calvin Klein!"

Mimic her look (for less) with the Norma Kamali for Wal-Mart Jersey Racerback Maxi Dress ($15, walmart.com for stores).

Or, try the rayon Ribbed Tank Dress ($39, spiegel.com).