'RHOA' Fight of the Night: Housewives Are 'Pissed' After Kim Zolciak Bails on Girls Trip to Barcelona
36 Worst Celebrity Feuds of All Time

And NeNe seems to think it's because "she's getting Kroy a new set of booty implants."

On Sunday's "Real Housewives of Atlanta," NeNe Leakes and Cynthia Bailey decided to plan a girls trip to Barcelona, but not everyone was on board with keeping the vacation girls only.

When Cynthia brought up the plans during a dinner at Porsha Williams' house, everyone seemed excited about it except for Kim Zolciak, who kept insisting she bring her husband, Kroy Biermann. Cynthia didn't seem to mind, but group friend Marlo Hampton made it clear Kroy was not welcome.

"I don't know why it's an issue to bring Kroy," Kim said, explaining that she had a stroke less than two years ago after getting off a four-hour flight. "Going to Barcelona, which is a 10-hour flight, does make me nervous. I know that my husband would make sure that I'm OK, he knows what signs to look for, and it makes me very uneasy."

Fast-forward to the day the ladies are scheduled to fly to Barcelona -- Kim bails altogether.

"What's going on with Kim?" Cynthia asked Nene on their way to the airport.

"Everybody's on board except Kim," NeNe said. "Kim is not coming, which I think is amazing. She was going to come, and Kroy was coming. Really, it's a girls trip, and I don't think that anybody should travel on this trip if they can not travel without their significant other. I think it is the strangest thing that she cannot leave and travel without Kroy."

"Who knows what she'll be doing while she's at home," NeNe later told Bravo cams. "Maybe she's getting Kroy a new set of booty implants. Run with that. He's getting some new booty implants installed in his ass."

NeNe then received a call from Kandi Burruss -- who said she was running late -- and informed her that Kim would not be going on the trip.

"If Kim wanted to come on the trip with her husband, then stay at home," Kandi said. "It's a girls trip. Kim is always the one who feels like she doesn't have to follow the rules, which is fine. You don't have to hang out with the circle."

In a separate car were Porsha and Shereé Whitfield, also riding to the airport.

"I'm so pissed that she's not going," Shereé said to Porsha. Porsha was equally as upset, and the two decided to call Kim to get her side of the situation.

"NeNe was super vocal about Kroy not going," Kim said. "It's a 10-hour flight, and not having my husband, it does make me nervous."

Shereé later told Bravo cams, "Kim likes to bring Kroy everywhere she goes. Now, I can't say I'm 100 percent opposed to that because I'm a girl. I like to be spoiled, so if I got a man that likes to drive me around and sit in a parking lot, then OK."

"The Real Housewives of Atlanta" airs Sundays at 8 p.m. on Bravo.

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