Miley Cyrus and Patrick Schwarzenegger -- Dropping Mad Cash at Strip Club ... With Paris Hilton

Miley Cyrus, Patrick Schwarzenegger and Paris Hilton walk into a strip club ... and let's just say some single mothers got paid.

The threesome went to dinner with a group of friends Thursday night before heading to a Moschino party at Art Basel where Paris Hilton was DJ'ing.

We're told the group hit up 2 other clubs once the Heiress wrapped ... then made their way to E11EVEN -- a venue that's part burlesque, part strip club -- and he dropped close to $10K.

Miley even took home a souvenir ... a mesh shirt from one of the strippers.

Check out this video of Miley and Patrick partying at E11EVEN. The video actually may have been shot Wednesday ... they like the place and went twice.