She’s been all over the world over the past month, and now that she’s back in the Big Apple, Ashley Olsen is keeping herself busy with promotion for her new book.

The “Full House” hottie was spotted on her way to the Ed Sullivan Theatre this afternoon (October 30) to tape a segment for “The Late Show with David Letterman” and talk about Influence, her new release with twin sister Mary-Kate.

Looking sexy and stylish, as usual, Ashley sported a simple thigh-length black dress teamed with a black ¾-length coat and a pair of black heels.

Earlier in the day, the paparazzi caught up to the mini-mogul as she ran errands around Midtown Manhattan, looking right at home in the big city.

Gossip Girls

Enjoy the pictures of Ashley Olsen arriving at the Late Show and running errands earlier in the day (October 30).