Watch Ellen & Michelle Obama Go to Costco in New Channel | Channify

Michelle Obama is on a book tour for her new memoir, "Becoming," so Ellen thought the best place to set up an impromptu book signing was one of America's favorite wholesale stores, Costco. Watch as they sign books for unsuspecting fans, do some shopping, and Ellen provides a musical interlude just for the former First Lady. #TheEllenShow #MichelleObama #Becoming