The items were submitted by Lewinsky's former lover to Special Prosecutor Kenneth Starr during his investigation of the former White House intern's sexual relationship with President Bill Clinton.
The collection includes a sheer black floor-length negligee and a letter typed on White House stationery signed by Clinton.
The collection is expected to net as much as $50,000.
Lewinsky's infamous blue dress is not among the items listed for sale.
Bidding ends Thursday.