The wizard is seen bathing while he tries to work out a clue to help him with the Triwizard tournament.
Daniel revealed on the website, danradcliffe.com: 'I haven't actually seen the bit... because basically I sort of come in with this dressing gown on and in theory I'm naked underneath. I actually had a pair of flesh-coloured underwear on which was just like really something you'd never want to wear!'
He added: 'I've not actually seen the bit where you see me with my top half undressed... but I've seen the bit after that where I'm just in the bath. It is very funny with Moaning Myrtle. It's a really good scene, but I'm sort of a bit nervous about seeing that in the cinema.'