Kim and Kourtney Kardashian stepped out of their Manhattan hotel this morning in designer ensembles prepped for a marathon day of wedding dress shopping. First up, the sisters made a stop at Vera Wang's Upper East Side boutique before joining the designer at Sant Ambroeus for lunch. Kim's reportedly searching for the perfect gown to complement her 20-carat engagement ring. She's done her fair share of research by checking out the best NYC has to offer. She visited Bergdorf, Barneys, and Bendel's yesterday following her early morning workout session with Heidi Klum. Heidi and Kim also spent an afternoon together last week when Kim filmed a guest judging cameo on the season nine premiere of Project Runway. Kim and Kourtney are on the East Coast for the time being, but they're sending big love to their sister Khloe, who turns 27 today. The family can look forward to being together in early August when Kim and Kris are reportedly tying the knot at a lavish LA estate.