The Welsh newsreader wore a blue polo neck sweater in place of his usual suit and tie as he strutted around the catwalks in the new BBC studio.
The broadcaster blamed a trainee for the incident which happened during a segment on the BBC News Channel.
BBC News broadcaster Clive Myrie has opened up about the moment viewers spotted a tear falling down his cheek as he reported from Kyiv in February.
The former footballer was one of many viewers moved by the desperate situation for Ukraine's children.
BBC Newsline Norther Ireland presenter Donna Traynor has quit her role "with immediate effect" after 33 years with the company.
'BBC Breakfast' has announced Sally Nugent as a permanent anchor following the departure of Louise Minchin in September.
The broadcaster will launch new logos and graphics for all its major platforms and streaming services.
The 56-year-old 'Question Time' host admitted some news stories she had reported were so upsetting they have been “burned into my mind.”
Owain Wyn Evans tweeted: "When they said try working from home I didn’t realise they’d expect me to do the music too."
The newsreader is currently on a break from receiving cancer treatment but is taking the advice for those with underlying health issues.
He said a member of the behind-the-scenes team had conveniently placed it at the end of the running order.
The journalist was diagnosed with an advanced form of the disease in 2014, and it returned last year.