Phillip Schofield donned a frock to welcome his This Morning co-host Holly Willoughby back to the programme.
He was seen in a clinging red dress pretending to be Holly, who has been on maternity leave, in a clip shown to viewers.
Afterwards he asked jokingly whether he could keep his tights.
In the studio later, Holly, 30, told him: "The most frightening thing about that is you had the best legs of anyone in this studio. Seriously, it was so unfair!"
The presenter gave birth to her baby girl, her second child Belle, in April.
She said of her return: "I'm glad to be back. Family are very well - they are all lovely, Belle is five months now and she's sleeping."
Holly married Dan Baldwin, who she met on children's show Ministry Of Mayhem, in West Sussex in August 2007.
She gave birth to her first child, a boy named Harry, in May 2009.
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