Knitting made their debut on the new series of the ITV singing show at the weekend and many fans guessed it was Claire Richards after clues included links to morning television, the West End, and the Steps song One For Sorrow.
H shared a clip on Instagram of himself watching The Masked Singer on TV and recognising the voice. He included the hashtags "#TheMaskedSinger #knitting #knittingmaskedsinger #clairefromsteps #clairefromsteps #hfromsteps #ianhwatkins #fyp #foryou #singer"
Richards was also watching the show, tweeting that she had correctly guessed that Ghost was football pundit Chris Kamara before he was unmasked in the first episode.
She wrote: "Yes!!!! She starts on a win!! Whoop whoop @MaskedSingerUK @chris_kammy."
And she also tweeted that she believed Knitting was Stacey Solomon, posting: "Oooh just had a thought knitting = Stacey Solomon!! I know I’ve said her before for sausage but she is very crafty!"
Watch: The Masked Singer 2023 reveals contestants
Richards, 45, and H, 46, were both members of 90s line-dancing band Steps, along with Lee Latchford-Evans, Lisa Scott-Lee and Faye Tozer and reunited for their 25th anniversary in 2022.
Richards has taken part in reality shows Celebrity MasterChef, Celebrity Big Brother and Popstar to Operastar and been a panelist on Loose Women.
The Masked Singer has returned for its fourth series with 13 new mystery celebrity singers, including a duo in form of Cat and Mouse.
Cat and Mouse, Phoenix, Jellyfish and Otter all took part in week one, alongside Knitting and Ghost.
Week two will see debut performances from Fawn, Jacket Potato, Pigeon, Rubbish, Rhino and Piece Of Cake.
Contestants' identities are kept strictly under wraps, even from one another, during pre-recording for the show, and they are banned from telling friends and family if they have taken part.
The last series was won by Natalie Imbruglia as Panda.
The concept for the show was invented in South Korea and has become a hit around the world with the surprise revelation of unlikely stars being unmasked beneath the ridiculous costumes. It has also spawned spin-off The Masked Dancer.