The nip slip-up happened because an episode was playing on an employee's computer in the background of the live broadcast.
Anna Paquin recently featured on BBC with an unintentional appearance on a news programme.
Now, the actress has branded the awkward incident "hilarious", taking to Twitter to say: "My breasts!"
"It's objectively amusing!" she tweeted. "Thanks for the giggle!"
In the viral video, Raworth was seen introducing the news of England's cricket series win over South Africa as a woman on the screen drops her pants to reveal tight pink knickers.
Anna's husband Stephen Moyer, 47, who played Bill Compton in the hit HBO series, also said: "This is wonderful and making me very happy".
Anna also joked about the BBC's reaction to what was seen on TV, questioning a statement which said they were "looking into the matter".
The host had no idea the steamy clip was being watched behind her - and the colleague with his headphones in clearly did not realise 3.8m people could see his screen. "What's there to look into my t**s photobombed the news because someone was watching #trueblood in front of the camera".