The SAG Awards nominee and author celebrates her new dating book in New York City. Plus: Patrick Dempsey, Britney Spears, Sienna Miller and more

12 of 16

ON THE MOVE

Jessica Simpson and John Mayer stay bundled up Wednesday during an unexpectedly brisk stroll in Jacksonville, Fla. The musicians have been keeping close company in the Sunshine State since the start of the week, when Simpson hooked up with the touring Mayer in Miami.