Here's 22-year-old reality TV star Kristin Cavallari wearing a cutout Herve Leger dress in L.A. on Tuesday (left) -- and 39-year-old "The Hangover" star Heather Graham in the same little black number in Ireland on Monday (right).
Both went commando.
Kristin & Heather: 2 Girls, 1 Dress
6/10/2009 2:13 PM PDT BY TMZ STAFF
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