The White House’s most infamous intern was seen partying across the pond last night.

Monica Lewinsky attended the birthday bash for American-born Heather Kerzner at Downtown Mayfair.

The Daily Mail reports that Duchess of York, Princesses Beatrice and Eugenie attended as well.

Lewinsky, dressed in black pants, a sheer blouse and black blazer was all smiles after the soiree.

Lewsinky may be making the rounds to help boost her chances to appear on the celeb-based reboot of “The Swan.”

Kerzner is married to the South African hotel magnate Sol Kerzner.