HOT GALLERY: Amanda Seyfried Puts on a 'Late Show'

Amanda Seyfried knows how to put on a show! The actress eventually decided to — rather playfully — remove her winter coat and face the cold in NYC to reveal the stylish red dress she had on underneath.

OK! NEWS: TWILIGHT STARS KRISTEN & ANNA ON VANITY FAIR HOLLYWOOD COVER

The star of the new film Dear John, starring opposite Channing Tatum, visited the Late Show with David Letterman at the Ed Sullivan Theater in NYC on Thursday.

OK! NEWS VIDEO: AMANDA SEYFRIED TAKES ON RACY ROLE IN CHLOE

OK! NEWS: CHANNING TATUM TALKS REAL LIFE INSPIRATION FOR DEAR JOHN

Dear John, based on the novel by Nicholas Sparks, opens in theaters this Friday! If it's anything like his other novels turned films — A Walk to Remember, Message in a Bottle, The Notebook and Nights in Rodanthe — then you may want to bring tissues!