PERTH-BORN Gemma Ward, the thin fashion model who captivated the world fashion scene, has put on weight as she struggles with the loss of friend Heath Ledger. Ward, seen last week on a Byron Bay beach, is due back on the runway in February and is believed to be madly exercising. It is understood her weight gains have been exacerbated by the shocking death of the actor, rumoured to have been her lover, a year ago. "I was really surprised when I saw her, considering what she used to look like - I had to do a double-take after I saw how much weight she had put on,'' one onlooker told The Sunday Telegraph. After Ledger's death, Ward announced that she planned to take a year off to go trekking in Nepal and spend time with friends and family. "She knows she did let herself go during the year, but she had fun doing it, just being herself and doing whatever she wanted,'' one friend, who did not want to be named, said. Ward's older sister, Sophie, also gave up...