The 22-year-old had just started her short dance routine at the Winter Olympics when her dress came undone, leaving her breast exposed.
Papadakis "felt it right away and prayed", continuing her routine with partner Guillaume Cizeron to deliver a performance that leaves them in second heading into Tuesday's free dance.
"It was pretty distracting," she said.
"My worst nightmare at the Olympics. I told myself 'you have to keep going'.
"That's what we did, and we have to be proud of ourselves, delivering a great performance with that happening."