Cops say the women stole the watches from men they got drunk after going to their rooms at the Encore hotel and casino.
Then they put the goodies in their special parts and tried to escape with the $1,000 time pieces.
Fox5 in Las Vegas reports Bryanna Warren, Trinity Kennard, and Charmella Triggs undressed the men and kept them busy while they lifted Rolex watches worth a total of $16,000.
When one of the men realized what was happening, the women ran out of the room and pulled out a stun gun to scare away one of the men, who was chasing them.
A police report obtained by the TV station says surveillance video caught two of the women placing the timepieces in their vaginas while still inside an elevator.
Cops grabbed the women before they got off hotel grounds. All three face charges of burglary, conspiracy to commit grand larceny and conspiracy to commit robbery.