Bravo did some spring cleaning with the Real Housewives of New York City lineup. And while old frenemies like Jill Zarin and Alex McCord have been cut loose, three new socialites were happy to take their place.

"The new girls have some really strong personalities," Sonja Morgan, one of the show's holdovers, tells Star. "That was no accident!"

Fans get a look at the show's new blood when Sonja hosts a party for the newbies: full-time (and one-legged) mom Aviva Drescher, author Carole Radziwill and businesswoman Heather Thomson. And the girls quickly see how the Housewives roll when a P.O.'d Luann confronts Ramona for insulting her parenting.