Real Housewives of New York City: Meet the New Castmates and#8211; and Watch Their Drama Unfold

From left: LuAnn de Lesseps, Carole Radziwill, Aviva Drescher, Ramona Singer, Sonja Morgan, Heather Thomson
New friendships Well, really more like new rivalries!

Aviva Drescher, Carole Radziwill and Heather Thomson will join the Real Housewives of New York City when the reality series returns for its fifth season (June 4, 9 p.m.) – and judging from an early preview (watch the clip below), they aren”t mixing so well with veteran Housewives LuAnn de Lesseps, Sonja Morgan and Ramona Singer, who have come back for even more drama this year. (The show”s season premiere will be 90-minutes to accommodate it all!)

But not all feuds are new: In a three-minute teaser for the season, Countess LuAnn calls out Ramona for blackmailing her and, later, tangles even more with Sonja and Ramona on vacation.

As for the newest Housewives, Aviva, a New York City native, is a stay-at-home mom with a law degree; Carole is a best-selling author and journalist; and Heather is a stylist and shapewear designer. And none of them seems to get along with Ramona, who especially seems to butt heads with Heather.

But that doesn”t stop the ladies from traveling together.

Watch as they take a tropical vacation – and jump into a swimming pool fully clothed (well, except Sonja, who goes topless) and with drinks in hand – and button-up for a visit to London that also includes some croquet. Oh, and booze – and lots of it.

The Pinot Grigio-tinged barbs get tossed Ramona”s way – and Aviva flat out calls Ramona and Sonja “white trash.”

Let the insults fly!