Oasis frontman Liam Gallagher is so desperate to shed some weight he has hired a personal trainer. The WONDERWALL singer has gradually piled on the pounds in recent years, thanks to his love of beer and bacon rolls, and now his girlfriend Nicole Appleton is urging him to exercise. An insider says, "Liam has been quite self-conscious recently about his belly. "He has some gym equipment in his house and he and Nicole have been working hard with his personal trainer. "Liam is really self-motivated about his fitness and wants to keep up with Nicole."