"This of course came as a huge shock, and William and I have been doing everything we can to process and manage this privately for the sake of our young family," Kate said in the video.
Gary Goldsmith, Kate Middleton's uncle, who described himself as “a toddler on sugar,” will compete alongside Sharon Osbourne and Louis Walsh, amongst others.
Prince Harry and Meghan Markle reportedly knew they "stirred up a huge amount of ill feelings" following their attacks on the royal family, according to a royal expert.
Kensington Palace announced that Kate Middleton, who has not been publicly seen since mid-January, won’t be involved in any royal engagements until after Easter.