I have no idea which places will be best to enjoy shopping there?

Guys, Next month my sister wadding so, I have decided to enjoy shopping in New York. But I have no idea which places will be best to enjoy shopping there? So, Anyone help me! I am waiting all your replies. After come back from tours from las vegas to antelope canyon and horseshoe bend. I will again read your replies.

Canal Street Market
South Street Seaport
Brooklyn Flea Market
Madison Avenue
Union Square
Woodbury Common Premium Outlets
The East Village

these are some places that I think you guys should explore to enjoy good shopping in a comfortable way.