Birkhead bought a pink bustier for $1,800 and a white negligee for $1,000 at the auction, run by Julien's Auctions and held at Planet Hollywood Resort and Casino on the Las Vegas Strip.
He was awarded custody of Danielynn after Smith died from an overdose of prescription drugs in February 2007. She was 39.
Birkhead said he hoped the items would help his daughter learn her mother's life story -- when she's old enough.
