Laughing is strictly off limits for Denise van Outen after she dislocated a rib practising for tomorrow's final of the hit BBC dance show.
The star, who was already nursing painful knees after her gruelling rehearsals, was injured again yesterday.
Appearing on Nick Grimshaw's Radio One breakfast show, she warned him: "Don't make me laugh because I've got a dislocated rib and it's painful".
She said: "I was practising a lift for the final show and I felt like I'd suddenly been winded and then I found out I've got a dislocated rib and if I breath really deeply I can feel it popping."
The former Big Breakfast presenter is not the only dancer to come a cropper in the run-up to the final of Strictly Come Dancing.
Girls Aloud star Kimberley Walsh said: "We're constantly comparing our injuries and our bruises. This week I've lost count, I can't count. The bruise count is done.
"The worst was last week Pasha and I did this little cartwheel thing in our Charleston and I kind of popped a few ribs just slightly out of place which was wasn't very comfortable".
Walsh is one of the favourites to win the ballroom show along with gymnast Louis Smith ahead of van Outen and actress Dani Harmer.
All four will perform two dances in the main show with one couple then voted out, leaving the three remaining pairs to perform their favourite dance from the series before the glitterball trophy is handed out to the winner.