The Masked Singer's latest unveiling was pregnant

The Masked Singer UK spoilers ahead.

ITV rolled out another episode of The Masked Singer UK series 4 this evening (January 28), which saw a Canadian actress and comedian revealing herself to be Pigeon.

Presided over by presenter Joel Dommett, alongside a judging panel of Jonathan Ross, Davina McCall, Rita Ora and Mo Gilligan, the latest show welcomed back performers such as Fawn, Otter, Jacket Potato and Rhino.

However, after finishing in the bottom two of the audience vote, and the judges then landing the killer blow, out stepped Katherine Ryan from her costume, who was heavily pregnant at the time of filming.

Related: The Masked Singer's Martin Kemp responds to judges' criticism about his singing

Addressing her song choice of Cheryl's 'Fight for This Love', Katherine told Joel: "I love Cheryl and I used to do a bit of roast comedy in my act about her, so I feel like it's beautiful karma that I went off on her song."

To the sound of gasps, the actress (catch her in Netflix's The Duchess) went on to reveal: "I've got a month left [of pregnancy]. I have a baby's foot in my lung at most times, it was actually harder than I thought!"

Katherine, who was the subject of a Louis Theroux documentary last year, also admitted that she couldn't tell her daughter Violet about The Masked Singer UK because "she would spill it to her whole school", so she'd be discovering the surprise when they watch that very episode together.

© ITV The Masked Singer UK series 4

Related: The Masked Singer UK unveils another famous face

Exclusively speaking to Digital Spy for our Screen Sisters series back in June, the former Mock the Week star got candid about motherhood and female opportunities in the TV industry.

You can read right here.

The Masked Singer and The Masked Dancer air on ITV1 and ITVX.