This girl loves to party!

We have obtained never before seen pics of Ashton Kutcher's alleged mistress, Sara Leal, and they're definitely hot!

The Two and a Half Men star met the 23-year-old blonde while on a guy's night out with former That 70's Show costar, Danny Masterson, who incidentally Tweeted, "Sometimes u gotta hang out in San Diego...", on the night of the alleged hook-up.

The actor was partying miles away from wife Demi, who was in NYC promoting her film, Five, when he reportedly picked up Leal at club Fluxx and took her back to his hotel suite at the Hard Rock.

It's been reported Leal has hired a high-powered lawyer and is demanding a $250,000 pay-off for her silence.

Meanwhile we've caught both Ashton and Demi stepping out with their wedding rings still on -- the pair attended the Kabbalah Centre Friday morning for Rosh Hashanah services.

Check out the rest of Leal's sexy party pix in our gallery below!