Magicians Penn Jillette and Teller are also Broadway legends—the duo got their start on the Great White Way in 1987 and are now back for a brand new magic extravaganza at the Marquis Theatre beginning July 7. But first, the stars made an appearance at Sardi’s on July 1, when they were honored with their very own portraits on the wall of the famed theater restaurant. Check out the magicians with piani…