They were announced when they joined BBC One presenters Alex Jones and Adil Ray on The One Show.
Sky Sports News presenter Kirsty said she’s always been a huge fan of Strictly.
Kirsty Gallacher joins Strictly (Ian West/PA)
“Sport and fitness have always been a big part of my life, but dancing is an entirely new challenge for me. I can’t wait to get started,” she said.
Iwan, who now regularly presents on The One Show, said he’s ‘extremely excited and scared’ about Strictly.
Iwan is a former athlete who now does TV presenting for The One Show (Andrew Matthews/PA)
“I love watching the show and I can’t believe I’m swapping my running spikes for dancing shoes,” he said, “I used to be quick at running around the track and I’m just hoping my dance partner doesn’t leave me behind.”
The other 13 celebrity contestants are Jeremy Vine, Ainsley Harriott, Kellie Bright, Georgia May Foote, Katie Derham, Carol Kirkwood, Peter Andre, Daniel O’Donnell, Anthony Ogogo, Jay McGuiness, Anita Rani, Jamelia and Helen George.
Strictly will launch on BBC One on September 5 at 7.15pm.