A woman has told a court she was "frightened" and in "complete shock" after DJ Dave Lee Travis put his hand in her trousers while they worked together on a production of Aladdin.
She said the "bear-like" former Radio 1 star touched her groin during the incident in his dressing room and the assault was only stopped when Travis's co-stars, the Chuckle Brothers, walked past.
The woman told Travis's retrial at Southwark Crown Court in London she went into his dressing room during the pantomine's run in the early 1990s.
"Dave Lee Travis was standing behind me with his hand on the door above my head, forcibly closing it," she said.
"He then put his hand down the front of my trousers."
The woman, who cannot be named, said Travis touched her groin as he put his hand between her trousers and underwear.
"My main focus was to get out," she said.
"I was really frightened. I didn't know what was going to happen next. I was very confused.
"It came as a complete shock.
"I was desperate to get out."
The woman, who was in her early 20s at the time of the alleged assault, said she managed to open the door by a few centimetres when she heard someone say "Alright Dave".
Travis then removed his hand from her trousers and released the door, she said.
She then realised it was the Chuckle Brothers, Paul and Barry Elliott, who had walked past the door, she added.
"I felt like every bit of my body was touched by his body," the woman said.
"He's a big chap, bear-like.
"I was very shaken up, almost disbelieving about what occurred."
The woman said she feared she would not be believed and may lose her job following the alleged assault and she agreed with a male colleague that she would not return to Travis's dressing room.
"Dave Lee Travis was the star," she said.
"Accusing the main star in the show of doing something like that - how is that going to affect your career?"
The woman said she later heard that women in the production had to be chaperoned by male colleagues when alone with Travis.
"I felt naive," she said.
"I thought 'maybe this goes on all the time'."
She told the court Travis pointed out that she never came to his dressing room anymore during "banter" at a bar following the alleged assault.
The jury of six men and six women were told the Chuckle Brothers could not remember the alleged incident.
Travis, 69, who is charged under his real name of David Griffin, faces a retrial on two counts - one of indecent assault of a woman between November 1 1990 and January 31 1991, and another of sexual assault on a different woman between June 1 2008 and November 30 2008 - on which a jury was unable to reach verdicts at a trial earlier this year.
He has also pleaded not guilty to an additional count of indecent assault alleged to have taken place on January 17 1995.
The allegations span a period from 1985 to 2008 and were alleged to have taken place when Travis was working as a DJ or entertainer, such as starring in a pantomime, or as a guest celebrity, or in his own home while he was being interviewed.
Travis, who was first arrested in October 2012, denies all the charges, jurors have heard.
Travis, who wore a grey jacket, white shirt and patterned tie in the dock, played the role of Abanazar in the Aladdin panto, the court heard.
The woman told the court that in a separate incident Travis had been heckled by a child and said; "What kind of b****** raises a brat like that?", without realising his microphone was still on.
A man who worked with the alleged victim on the production said she told him that the DJ had "touched her inappropriately".
"She was not hysterical, she was shell-shocked," he said. "As far as I can remember that turned into indignation, then she was quite shaken."
He said there was "an understanding" that female colleagues should not be left alone with Travis.
"I think this incident became generally known among younger members of staff," he said.
"A lot of girls felt - threatened is the wrong word - wary.
"There was an agreement people would look out for each other."
He told the court Travis had an "aura" as the main star of the show.
"People tried to stay out of his way," he added. "I felt he had quite a threatening presence."
The witness said Travis wore a cloak for his role, which he would put around female colleagues. "It made people feel uncomfortable," he said.