Taylor Swift's rumored bridesmaid Gigi Hadid showed her appreciation for boyfriend Bradley Cooper's look as they headed to the singer's wedding celebration in NYC on Friday.The supermodel, 31, dazzled in a pink shimmering dress as she left for Swift and fiancé Travis Kelce's enormous bonanza at Madison Square Garden with her actor partner.Cooper, 51, looked dashing in a fitted black suit and bow tie, as an admiring Hadid shot him the look of love as he climbed into a car.Hours earlier, a vehicle believed to be carrying Swift was seen heading off from her home and arriving at Hadid's residence - fueling rumors the pop star was getting ready for her big day with her bridesmaids.Swift and Kelce, both 36, partied late into the night on Thursday for their 'rehearsal dinner' at Infosys Theater with 100 of their closest friends, including Hadid, Cooper, Selena Gomez and Jack Antonoff.There are conflicting reports about whether Swift and Kelce have already married, but there are plans for an enormous party with 1,000 guests at Madison Square Garden today.Guests are expected to arrive at MSG at 3.30pm ET, and the festivities will kick off around 5pm. City permits suggest the extravaganza could go on until 4am. Taylor Swift's rumored bridesmaid Gigi Hadid showed her appreciation for boyfriend Bradley Cooper's look as they headed to the singer's wedding celebration in NYC on Friday Cooper looked dashing in a fitted black suit and bow tie There are conflicting reports about whether Swift and Kelce have already married, but there are plans for an enormous party with 1,000 guests at Madison Square Garden today. Above, the couple in MarchIndustry experts claim the nuptials cost over $15 million, including the venue, security, insurance, permits, catering, and decorations to transform the venue into their fairytale wedding.Taxpayers contributed over $1 million to pay for the couple's NYPD security detail patrolling MSG, which banned the press from getting too close and threatened to arrest anyone who did not comply with street-closure rules on Thursday.A few glimpses of the interior were visible. Pink, orange and yellow roses were photographed woven into foliage at the top of an escalator.Crews are now working feverishly to turn around the decor for night two of the festivities. Hadid also shared glimpses of her glam look for Thursday night's festivities. Her hairdresser, Dimitris Giannetos, shared new photos on Instagram of the recent cut and style he had done for the star. The pictures showed Hadid sporting gorgeous, bouncy layers that framed her face, the length hitting just below her shoulders.Hadid was snapped showing off her new hair while wearing a blue T-shirt, glowing makeup, and a stunning mauve lip color. A glimpse of Hadid's shimmering pink wedding look was visible as she shot her partner a smitten look Hadid also shared glimpses of her glam look for Thursday night's festivities Hadid's hairdresser, Dimitris Giannetos, shared new photos on Instagram of the recent cut and style he had done for the star He also shared insight into how he perfected the look, detailing that he used a round brush to achieve the shape Olympic gymnast Simone Biles also shared a peek into her getting-ready process, as she took to Instagram on Friday afternoon to share the glam set up at her hotel