Prince Harry's underwear worn during his famous strip billiards game from Sin City is hitting the marketplace ...

A former stripper claims she kept the underwear for 10 years before deciding to market.

PRINCE HARRY 

The 10th anniversary of Harry's wild night in Vegas will be celebrated in the month of April, and former stripper Carrie Royale

believes that the timing is perfect to auction off their royal robes of Harry from that night the luxury suite of a high roller.

The exotic dancer says she shared a hotel room with Harry when he changed to his birthday outfit while playing the pool ...

as well as auctioning off the dress and swimsuit that she claims she wore the same night.

PRINCE HARRY

What is a keepsake of the royal family such as this worth? The stripper is of the opinion that the bid for this auction could be up to $1 million.

The stripper believes that the underwear auction is a perfect circle moment for Prince Harry The stripper said ... 

"I am holding the auction to help remind him of his fun side, the side that his marriage to his wife Meghanhas tried to control." Wow.

Live and online bidding begins Thursday at 10:30 pm PT. It will begin with a price of $10,000. If bidding exceeds $1800,

the winning bidder will receive the vintage bottle of Dom Perignon Rose wrapped in 24 karat gold. It is worth more than $200,000.