A 45+ year old woman, no matter how fabulous her body is, in a too-tight velour track suit in hot pink (with something inevitably written across her ass!) from the Jr's department looks desperate (not necessarily to get laid, but definitely to hold on to her youth).
No two ways about it.
That said, if she's comfortable with that look, more power to her. She has the right to wear it and I have a right to voice my obnoxious opinions on it.