Betony Vernon.

Bookmarc, one of designer Marc Jacobs’s gazillion Bleecker Street boutiques, is hosting an author signing with jeweler and sexual provocateur Betony Vernon, who is flying in from Paris for the occasion. The book is called The Boudoir Bible, and it is more chichi chic Dita Von Teese than disgraced Hollywood Madam Heidi Fleiss. Buy the sexy manual and also get a chance to inspect Mr. Jacobs’s heavily inked bulging biceps.

Bookmarc, 400 Bleecker Street, (212) 620-4021; 6pm-8pm.