JENNIFER LOPEZ has smartened up dancer boyfriend CASPER SMART - he can no longer wear sweat pants.
Smart admits he has had to rethink his wardrobe since dating the stylish singer/actress - and she's not afraid to tell him what's not acceptable attire.
He tells Access Hollywood, "I have to watch what I wear. I can't walk around in, like, sweats and chill-out clothes. I've gotta be nice."
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