Nathan Lane or Baby JaneTonight’s boldfaced parties:
• Butley premiere party. Cipriani 23rd Street, 200 Fifth Ave., 9:15 p.m. Butley, opening on Broadway tonight, is a comedy about a professor distraught when his gay lover leaves him on the same day that an academic rival publishes a masterpiece. In other words, it’s a Little Miss Sunshine prequel. Promised party guests include Butley star Nathan Lane, Hope Davis, Ivana Trump, Brian Grazer, Rocco DiSpirito, and Lasse Hallstrom.