Beatrix Von Bourbon, who advertises her services on a website, takes to the stage in Birmingham in front of Simon Cowell, David Walliams, Alesha Dixon and Amanda Holden.
She said backstage: "Since being a child I've had a background in dance. I took ballet classes and tap classes. I'm terrified about performing in front of so many people today. I think it's being out of my normal space."
Just before performing, 27-year-old Beatrix admitted she was "a bit terrified" to Cowell, who has been attracted to previous erotic dancers on the show.
Cowell said to Beatrix: "Oh, you've got nothing to be afraid of."
Britain's Got Talent airs tonight (Saturday) at 8pm on ITV1.
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> Stephen Mulhern's Britain's Got Talent Digital Spy blog
View a gallery of the acts performing on the show below: