After her split from Gavin Rossdale, Gwen Stefani debuted a new track called Used To Love You, which she performed in New York on Saturday night.The couple, who share three sons, split back in August after 13 years of marriage and seems like Gwen has drawn inspiration from her relationship and poured out her heart as she belted out the lyrics 'I don't know why I cried, but I think it's because I remembered for the first time since I hated you, that I used to love you'. She introduced her new song on Saturday at her New York concert by telling the crowd 'I just want to share a song that I wrote recently. This song is really special.' She showcased her body in a number of S€x¥ outfits as she rocked the stage. From a leather top and fishnet tights to a white minidress with a huge black bow, she looked super stylish. She also struck some racy poses donning a lacy red top and cropped trousers and later in the evening she was spotted headed to an afterparty donning a cut out top and cropped leather trousers with leopard printed sandals.