Angela Scanlon has revealed a 'very well-known' male celebrity asked her a 'creepy' question while he was a guest on The One Show.
The former Strictly Come Dancing contestant, 41, is a regular fill-in host on the BBC magazine show.
And Angela, who is married, told how on one occasion while she was presenting, the male guest asked about her underwear right before they went live.
Speaking on the Where There's A Will, There's a Wake podcast, she said: 'I was doing a live show one day and before we started recording. It was myself and a male co-host and there was a male guest who's very, very well-known.
'He was sat opposite me, and I'm like a busy woman, I was like learning where we were going, I was understanding when the VTs were dropping and whatever else.
'I welcomed him in with open arms and I sat down and did what I had to do, which is my job, which is what he was there to do, presumably.
'Anyway, just before we went live, he turned around to me and he said - I was wearing jeans and a blazer, not that that should matter - but he said: 'Are you wearing panties underneath those?'
'And then, boom, we are live on air.
Angela admitted she didn't know what to do in the moment so carried on with her hosting duties but was 'ready to burst' and wanted to expose the man live on-air for what he had just said to her.
'He was such a creep. It was too much,' she added.
'The raging internal conflict because I'm a woman who stands up for herself, but I'd have been unprofessional if I had in that situation.'
Angela previously admitted she lied to land her gig on The One Show.
Before landing the job, she had told a producer that she had experience working on studio shows at home in Ireland.
She admitted while appearing on Spencer Matthews' Big Fish podcast: 'He said, "Have you ever done studio?" and I said, '"Yeah I've done loads of it in Ireland.'
Angela continued: 'Then I went off to do Robot Wars and I got a call to say, "They want you to fill in on The One Show." I was on a train practising how to read autocue and I had no idea what I was doing.'
The former Strictly star, who replaced Graham Norton as Virgin Radio's weekend presenter, revealed that she generally enjoyed her time on the show.
However, she did confess that sometimes it was 'quite lonely' because she was pretending to be more experienced than she actually was at the time.
She said: 'I was too afraid to say guys, "I don't know what open and switch means you're going to have to literally break this down for me."
'I should have openly said, "These are my limitations, I'm going to need help: I think I can do it, I'm pretty sure I can, but I might need you to give me a hand."
'Whereas I just shut up shop and had to pretend that I knew exactly what I was doing which was quite lonely.
'I had fooled myself into believing that if I reached these things that I'd be great, everything would be fantastic.'