Halsey was spotted arriving at Taylor Swift’s 30th birthday bash at Oscar Wilde restaurant in New York wearing a Durham Reversible Printed Hooded Down Coat ($495.00) and matching Delora Fitted Printed Dress ($330.00) by Alice + Olivia, a Saint Laurent Medium Kate Leather Shoulder Bag ($1,990.00), Wildflower Strawberry iPhone Case ($35.00) and Steve Madden Via Black Patent Boots ($142.95).