Check out this video that takes you behind the scenes for the costumes of Black Swan (which is an excellent movie, I personally give it 4/4). Notice all of the pinks and greys and cremes Portman's character Nina wears.
You too can channel your inner ballerina with these looks from J.Crew for $20 or less...how lovely.
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Woolcot Pant, $20
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Glimmer Sash, $10
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Tissue Sweatshirt Tee, $15
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Perfect Fit Ruffle Cardigan, $10
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Tiered Cardigan, $20