HOT GALLERY: Jennifer Garner Gets Glam for 'Late Show'

A glammed up Jennifer Garner still had time to grab a pen and sign a few autographs on her way into the Ed Sullivan Theater on Tuesday in NYC, before an appearance on The Late Show With David Letterman. Good to see even busy celebs are good to their fans!

Jen and the rest of her co-stars from Valentine's Day have been super busy promoting their romantic flick lately.

OK! GALLERY: CELEBS FLY SOLO AT VALENTINE'S DAY PREMIERE

The movie has a veritable coterie of hot Hollywood names, including Jen, Jessica Alba, Jessica Biel, Ashton Kutcher, Patrick Dempsey, Taylor Lautner, Julia Roberts, Taylor Swift and more!

OK!'s PHILMGUY REVIEWS: VALENTINE'S DAY

FOR THE LATEST CELEB NEWS & PICS, CHECK OUT THE NEW ISSUE OF OK! ON STANDS EVERYWHERE THURSDAY, FEB. 11!