Summer Singer!On Thursday,TheReal Housewives of New York CitystarRamona Singershared aslideshow of photos, which included a sizzling throwback bikini shot of herself at 37 years old.“Queen of working out way back at 37 years old! #tbt Tune in tonight for an all new #RHONY and watch us get our aerobics on! @bravotv,” Singer, 62, wrote.The photo shows Singer posing on a beach wearing a tiny pink string bikini, which showed off her fit physique.Singer also shared an image of herself lifting weights, wearing a workout bra and multicolored biker shorts.The last photo in the series was of Singer and her costarDorinda Medleyposing in vibrant aerobic ensembles from the latest episode of the Bravo franchise.In PEOPLE’sexclusive sneak peekat Thursday’s episode, Singer has to break the news toLuann de Lessepsthat she and the rest of the ladies won’t be attending her Christmas cabaret show.Ramona Singer.Ramona Singer/InstagramAsRHONYviewers know, the ladies have been annoyed with de Lesseps, 54, since their trip to Miami, claiming she is morefocused on herself and her cabaretthan engaging with the rest of the group.However, Singer’s reason for not attending de Lesseps holiday show is because she’s actually throwing a party on the exact same night.“Don’t be upset with me,” Singer tells de Lesseps in the clip. “But basically we support you, we love you, but we don’t really want to sit and see you work.”“I don’t want to sit at a table and watch you perform. I’ve already seen you perform,” she continues. “You know me, I’m very social. And I’m throwing a surprise party forSonja [Morgan]and Dorinda, so you can come after your show. Your show’s over at 9.”Ramona Singer.Ramona Singer/InstagramDe Lesseps is clearly miffed.“Well, yeah, no, my show’s not over at 9. It’s not over till at least 10,” she says. “You do you.”Singer starts gushing about how excited she is to “see the expression on Sonja and Dorinda’s face,” but de Lesseps isn’t having it.“Yeah I know, except I can’t be there,” she says. “Why do you have to do it on the same night as my show?”“Because there’s no other night to do it,” Singer replies.Ramona Singer and Dorinda Medley.Ramona Singer/Instagram“Uh, there’s seven days a week,” de Lesseps fires back. “So any night you could do it.”Finally, Singer is forced to admit the bottom line: They just don’t want to be there.“We love you, but we really don’t want to go to the show,” she says. “We want to go out and have fun.”The Real Housewives of New York Cityairs on Thursdays at 9 p.m. ET on Bravo.

Summer Singer!

On Thursday,TheReal Housewives of New York CitystarRamona Singershared aslideshow of photos, which included a sizzling throwback bikini shot of herself at 37 years old.

“Queen of working out way back at 37 years old! #tbt Tune in tonight for an all new #RHONY and watch us get our aerobics on! @bravotv,” Singer, 62, wrote.

The photo shows Singer posing on a beach wearing a tiny pink string bikini, which showed off her fit physique.

Singer also shared an image of herself lifting weights, wearing a workout bra and multicolored biker shorts.

The last photo in the series was of Singer and her costarDorinda Medleyposing in vibrant aerobic ensembles from the latest episode of the Bravo franchise.

In PEOPLE’sexclusive sneak peekat Thursday’s episode, Singer has to break the news toLuann de Lessepsthat she and the rest of the ladies won’t be attending her Christmas cabaret show.

Ramona Singer.Ramona Singer/Instagram

Ramona Singer

AsRHONYviewers know, the ladies have been annoyed with de Lesseps, 54, since their trip to Miami, claiming she is morefocused on herself and her cabaretthan engaging with the rest of the group.

However, Singer’s reason for not attending de Lesseps holiday show is because she’s actually throwing a party on the exact same night.

“Don’t be upset with me,” Singer tells de Lesseps in the clip. “But basically we support you, we love you, but we don’t really want to sit and see you work.”

“I don’t want to sit at a table and watch you perform. I’ve already seen you perform,” she continues. “You know me, I’m very social. And I’m throwing a surprise party forSonja [Morgan]and Dorinda, so you can come after your show. Your show’s over at 9.”

Ramona Singer

De Lesseps is clearly miffed.

“Well, yeah, no, my show’s not over at 9. It’s not over till at least 10,” she says. “You do you.”

Singer starts gushing about how excited she is to “see the expression on Sonja and Dorinda’s face,” but de Lesseps isn’t having it.

“Yeah I know, except I can’t be there,” she says. “Why do you have to do it on the same night as my show?”

“Because there’s no other night to do it,” Singer replies.

Ramona Singer and Dorinda Medley.Ramona Singer/Instagram

Ramona Singer

“Uh, there’s seven days a week,” de Lesseps fires back. “So any night you could do it.”

Finally, Singer is forced to admit the bottom line: They just don’t want to be there.

“We love you, but we really don’t want to go to the show,” she says. “We want to go out and have fun.”

The Real Housewives of New York Cityairs on Thursdays at 9 p.m. ET on Bravo.

source: people.com