Entertainer Rolf Harris asked a 13-year-old girl "do you often get molested on a Saturday morning?", when he assaulted her at BBC studios, a court has heard.
The 86-year-old is alleged to have targeted the youngster after a live recording of Saturday Superstore, presented by Mike Read and Sarah Greene in 1983.
She had been invited to the green room after the show and as she got a glass of water, Harris allegedly sexually assaulted her as he whispered in her ear: "Do you often get molested on a Saturday morning?"
Her sister recalls Harris being "cuddly" towards the girl, who cannot be named for legal reasons.
The girl is one of eight women giving evidence at London's Southwark Crown Court against Harris alleging that he sexually assaulted them when their ages ranged between 12 and 42.
None of the assaults, which are said to have taken place between 1971 and 2004 when Harris was aged between 41 and 74, involved "penetrative activity", the court has heard.
Many of the girls allege they were targeted while asking for autographs.
Prosecutor Jonathan Rees told the jury: "Most of the behaviour complained of falls into a broad category that might be described as unwanted groping, and includes, for example, grabbing or touching breasts over clothing."
He added: "One notable feature of the case is that none these assaults is alleged to have happened in private; all appear, so it is alleged, to have occurred in public settings when there were other people in the near vicinity.
"And it may be that you will want to consider whether Mr Harris' celebrity status played any part in making him apparently so brazen in what it is alleged that he did."
Jurors were told that Harris was in Stafford Prison, serving a sentence for a series of indecent assaults on four female victims.
Each of the new alleged victims contacted the police or the NSPCC in the wake of the "widespread publicity" surrounding the first trial, he said.
The jury heard about an alleged assault on a 18-year-old backing singer at a music rehearsal studios near London Bridge in June 2002.
It is alleged he began stroking her back and making inappropriate comments.
Other members of the backing band say they remembered it and said they found the defendant's behaviour "inappropriate, variously describing it as creepy, cringing and lecherous".
Harris, formally of Berkshire, denies the charges and the trial continues.