Including the Kate Spade bag that Kendall Jenner carriedCredit: Amazon (4)Summer wedding season is officially here, and if you're staring down a calendar full of invites with different dress codes, you’ll need a bag that can keep up. Instead of buying a separate clutch for every celebration, we found a smart style that can satisfy multiple occasions: a convertible bag.Whether you're headed to a black-tie reception, a breezy beach ceremony, or a …