EXCLUSIVE: Ramona Singer Dishes on 'RHONY' Newbie Tinsley Mortimer -- Why She Calls Her 'Bambi!'

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The Real Housewives of New York City
gets an injection of some fresh blood Wednesday night in the form of Tinsley Mortimer.

“Fresh blood?!” Ramona Singer asks. “Like what, we’re out for kill?”

Well, it is Housewives. ET caught up with Ramona for Housewives Happy Hour, where she spilled all about her new co-star, Manhattan’s one-time “It girl.”

“I call her ‘Bambi,’” Ramona confesses. “She has, like, triple eyelashes on. Her hair is always perfect. Her makeup is always perfect. “

WATCH: RHONY Is Back for Season 9 -- See the Trailer!

For what it’s worth, Tinsley’s tagline is, “A good set of lashes can fix anything…even a mugshot.” The 41-year-old was arrested for trespassing on her ex-boyfriend’s Palm Beach, Florida, property in 2016.

“She brings her own drama,” Ramona notes.

“I went back to his house to get a bag of mine,” Tinsley explains to ET’s Jennifer Peros. “We got in a big fight there, and I couldn’t get my bag back. So, I called the police to get my bag back. That’s when I found out that they could arrest me for being on the property, which was a complete shock to me.”

“She’s a character,” Ramona says. “She is. We’re a tough group to fit in. I think she fit in pretty well. She held her own.”

“Me coming back to New York, and me doing the show and stuff, is all about me taking my power back,” Tinsley shares.

MORE: Andy Cohen Previews ‘Politically Charged’ New Season of RHONY

Tinsley’s entre into the group is Sonja Morgan, her friend of more than 15 years. Sonja actually took in the socialite as her houseguest while filming for season nine. 

“[She] had rules,” Tinsley reveals. “One was to not take the elevator. The elevator was off limits. I can’t bring a guy home … I didn’t know that at first! I didn’t know that was a rule, so I found out the hard way, when a guy did come over and I got in trouble. He had to leave.”

“The two of them, it's like they go at it, like, mother and daughter,” Ramona notes. “Or, two sisters. I mean they're always fighting about something.”

WATCH: Sonja Morgan and Luann D’Agostino Face Off on RHONY

Ramona says to expect lots of drama from Tinsley -- she even went after her at one point!

“I just very gently said, 'Tinsley, I want you to know Sonja's upset about A, B, C and D, so maybe take this in, 'cause she's complaining,’” Ramona recalls. “ All of a sudden, Tinsley turns around and screams and yells at me. I mean, gosh. Why should I help people anymore?”

“I really made some good friends with some of [the cast],” Tinsley teases. “Others, not as much.”

That “other” is Bethenny Frankel, whom Tinsley describes as “hot and cold.”

“She’s not just going to immediately open up to you,” Tinsley says. “You have to work for it … that’s how our relationship goes.”

Ramona also tells ET she and Bethenny go at it this season, the biggest blowout Ramona’s ever had with another woman. For more on that, check out the video below. The Real Housewives of New York airs Wednesdays at 9 p.m. ET on Bravo.