Hilary Duff leaves her NYC hotel on Monday following an appearance on TRL to promote "Material Girls" with her sister Haylie (06/26/06).
Hilary appears to have put on a few needed pounds to give her back that much needed glow.
Hilary Duff doesn't have any patience for back stabbing friends.
She said: "They would lie to me and I'd keep catching them and finally I thought: 'Why am I having these people around?'
"It's hard to say: 'OK, I don't want to be your friend anymore. I'm kicking you out of my life', but slowly, over time, I did it."
She added: "I got to do a lot of soul searching and I feel like a happier person. It's important to be able to be alone with yourself."