KEITH Lemon joked on today's Good Morning Britain that Holly Willoughby is "always drinking" while filming for Celebrity Juice.
The comedian, 45, teased the popular presenter, 37, about her boozing, as Piers Morgan made the hilarious claim that she "keeps vodka under her desk".
Speaking to hosts Piers, 53, and Susanna Reid, 47, Keith said: "Celebrity juice is very boozy. I'm not saying you should go and get drunk and stuff."
Piers revealed: "Holly Willoughby has vodka under her desk. I've sat next to her and seen it."
Keith, who was on the show to promote Keith Lemon: Coming in America which starts on Thursday at 10pm, joked: "She's like an old man with a brown paper bag.
"She looks like an angel, but she's got a guzzler of a tram. She's always at it. Tequila. She walks round the house with a drip full of booze."
As Piers and Susanna fell into stitches, Keith said: "You're only smiling because you know it's true."
Piers agreed: "I do know it's true. I've drunk with Holly Willoughby.
"Trust me, if you have lunch with Holly Willoughby you cancel dinner."
Keith added: "And Fearne (Cotton) who you think is the rock chick is actually like the girl nextdoor. All she eats is twigs and berries."
It comes after Holly was forced to tackle an assault course with friend Fearne, 36, with the same banana in their mouths.
While cheeky host Keith Lemon is no stranger to making the girls undergo raunchy challenges, he well and truly excelled himself when he made them take on Totally Bananas Extreme in May.
Dressed in green banana-covered onesies, the girls were told they must hold each end of a banana in their mouths while pitted against a number of tricky obstacles.
After the This Morning presenter naughtily joked that the banana is at risk of slipping up Fearne's nose (the star is regularly teased over the size of her nostrils by host Keith) they got straight into it.
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The long-time friends and Celebrity Juice captains first met the 'Sea of Bananas' which has them rolling on the floor, over a number of unpeeled bananas.
Despite having a banana shoved in their mouths, the pair could barely contain their laughter as they cross over one another.
Next they were forced to balance on the 'Banana See-Saw', before facing the 'B*****d Banana' - a man dressed in a banana costume who threw bananas at them.
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