The woman left the ring unattended at the Columbus Avenue gym, police said.
There are dozens of events happening, from military parades to sneaker expos to falcon demonstrations.
Rooftop pools at hotels across the city offer a more exlcusive experience for swimmers.
The public can get discounted meals at 25 Upper West Side restaurants during Fashion Week.
A jacket from Porsche Design's upcoming collection was stolen off a mannequin at the Empire Hotel on the last day of Fashion Week.
As a legal fight over noise at the drags on, UWS neighbors say the situation hasn't improved.
Police reports show there's been a recent rash of purse thefts in Upper West Side bars.
"Gossip Girl" is filming on the Upper West Side for a storyline reported to involve a fictional Columbia University professor.
The 'Premium Rush' crew, starring Joseph Gordon-Levitt, got a head butt last week, but was welcomed at Columbia.
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