The Met is dressing for a blessing with a new show exploring fashion’s engagment with the devotional practices and traditions of Catholicism. The much-anticiapted presentation from the Costume Institute will present ecclessiastical masterworks from the Sistine Chapel sacristy, many of which will be showon for the first time outside of the Vatican. For Tim Marlow’s complete guide to May’s must-see museum exhibitions, visit Sotheby’s Museum Network.