The footwear decision is the whole outfit
Pick the shoes before you pick the clothes. Every other choice follows from this one. Block-heeled kolhapuris in two to three inches give you height without the ankle-roll risk of stilettos on uneven pandal ground. Flat mojaris work if the leather is broken in, stiff new ones will blister by the second stop. Kolhapuris with a back strap are more secure than slip-ons when you are moving through crowds. If you know the route involves a long stretch of road or a muddy maidan, a clean pair of ethnic-style sneakers in white or tan reads festive enough with the right kurta and will not ruin your evening.