Ariana Grande is saying “thank u, next” to her iconic ponytail as she debuts a brand new look for fall. The “Hate That I Made You Love Me” singer, 33, showed a sleek bob cut and a darker, chocolate hair color in a carousel of autumn photos via Instagram on Thursday, October 22. The cut is a major change from Ariana’s signature ponytail and usual waist-length hair. Grande credited her makeover to stylist Brandon Pietsch, whom she’s worked with often in the past. In his own Instagram post on Thursday, the L’Oréal Professionnel Global Creative Contributor made light of ditchin...