Katie Holmes Steps Out for Iris Apfel's 100th Birthday Party in NYC!

Katie Holmes is helping Iris Apfel celebrate her 100th birthday!

The 42-year-old Dawson’s Creek actress hit the red carpet at the fashion icon’s 100th birthday party hosted by H&M on Thursday evening (September 9) at Central Park Tower in New York City.

PHOTOS: Check out the latest pics of Katie Holmes

For the event, Katie kept things cool and casual in a tan shirt paired with black trousers and black heels.

Other stars in attendance included fashion designer Donna Karan and model Aaron Rose Philip.

Katie has had a busy schedule these past few days attending different New York Fashion Week events. The night before, she showed off some skin in a cutout outfit while attending the grand opening of the Vacheron Constantin boutique.

FYI: Katie is wearing a Toga Archives x H&M wool sweater.

10+ pictures inside of Katie Holmes stepping out for Iris Apfel‘s birthday celebration…