Holly, 33, was pictured flashing a smile for cameras outside the Riverside Studios in London on Wednesday (9 April) after taping the ITV2 show's latest episode.
And, according to said show's Twitter account, it wasn't the most glamorous of episodes for Holly and co-star Fearne Cotton.
A preview picture tweeted shows Holly and Fearne looking as beautiful as ever – apart from the male genitalia crudely drawn on their foreheads. Why? Well, we're not entirely sure.
A preview video shows Fearne holding a pen in her mouth and drawing a penis on Holly's head. Maybe not a look she'll be trying again anytime soon…
If you want to see what happened – and why! – then tune into Celebrity Juice tonight. The guests this week are John Newman, Ollie Locke, Matthew Wolfenden and Keith Duffy.
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