While Harvey Weinstein schmoozed at Herb Allen’s Sun Valley retreat with Barry Diller, Jeff Bezos, Bob Iger and Mark Zuckerberg, his president of TV had a power confab of her own in New York.

To celebrate her birthday, Meryl Poster invited 50 power women to Noho hot spot Acme on Wednesday, including Condé Nast Entertainment head Dawn Ostroff, A&E Networks chief Nancy Dubuc, former Bravo boss Lauren Zalaznick, Robert De Niro’s producing partner Jane Rosenthal, NBC-Universal chief talent officer Cara Stein, Marie Claire Editor-in-Chief Anne Fulenwider, Barneys New York’s Charlotte Blechman, designer Liz Lange, actress Alyssa Milano and “Mob Wife” Renee Graziano.

We hear the ladies paired Sprinkles birthday cupcakes with tequila drinks.

At Sun Valley on Thursday, Weinstein and Brian Grazer were interviewed by Charlie Rose for a panel on creativity.

Rose is expected to interview Secretary of State John Kerry tomorrow, while Michael Bloomberg will appear in an interview with Willow Bay. But The Post reported that Kerry made a last-minute trip to the Middle East and wouldn’t attend Sun Valley.