Look who’s wearing a snazzy outfit from the 60s.

On Monday, Winfrey will broadcast a special episode called “The Oprah Winfrey Show: Oprah Goes Back in Time – The ’60s,” which will feature a 1960s themed set; appearances by “Mad Men” stars Jon Hamm and January Jones; a performance from “Jersey Boys,” the Four Seasons musical; and a studio audience dressed in period costumes.

BTW, “Mad Men” airs a new episode “Guy Walks Into An Advertising Agency” on Sunday against the Emmys.