The Real Housewives of New York City entrepreneur went as none other than "Oops!...I Did It Again"-era Britney Spears at a party at Manor 849 in Manhattan on Saturday. Yes, Ramona nailed the look from the iconic music video with her long blonde hair, red latex catsuit, and all.
"Oops!...I Did It Again" is always worth a rewatch, whether you need a refresher on Spears' original ensemble or not.
Luann de Lesseps also attended the bash as the most glamorous vampire we ever did see.
It looks like she also ran into some admirers at the event.
Fellow diva Erika Jayne also performed at the party and rocked her own daring look.
Check out more of Erika's favorite costumes, below.