Power couple Beyonce and Jay-Z led a host of music royals in celebrating the launch of ‘The Thriving Child’ – a parenting book by Erica Reid, the wife of Epic Records head LA Reid.

The trendy event, which was also attended by Mary J. Blige, was a break of of sorts for 30 year old Beyonce. For, the megastar is in intense rehearsals for her series of comeback shows at the Revel resort in New Jersey at the end of the month. As reported, overwhelming demand has seen another date added to the hotly anticipated showcase.

Peep more pics from last night’s New York event below…

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