Mumbai is paradise for road side shopping
Check out the following :
1. Hill Road
3 Fashion Street
4 Colaba Causeway
5 Lokhandwala market
6 Crawford Market
7 manish market But pls note mumbai is huge and one market may be away from another by 15-20 km . So check Google map and plan accordingy
Hey Mumbai street markets are divided into various segment gils/boys, western /traditional, fine cloth/not so good quality..
For Boys -
fashion street - CST
Sunday evening market - Chruchgate
Crofet market ( middle area of the market) - Cst
And if you are looking fir traditional wear - Bhuleshwar market - western line near charni road.
For Bags - Bandra, bhuleshwar, fashion street and Irla market (Ville Parle).
Best time to visit most of the market is 3 pm -7 pm