Hot mama alert. Hilary Duff stopped major traffic on Tuesday night, thanks to a very revealing red number. The 27-year-old singer and actress, who was on hand for the New York premiere of her new TV Land series, Younger , finished off her plunging look with strappy heels, a sparkly clutch and yes, that blue hair . Before the event, held at the Landmark Sunshine Cinema in Manhattan, Duff posted this cute selfie from her hotel: Younger , also starring Sutton Foster , Debi Mazar , and Nico Tortorella , airs Tuesdays at 10 p.m.