Esme Young was "frightened" to work with Cher.
The 73-year-old fashion designer - who is known for her role as a judge on 'The Great British Sewing Bee' - impressed pop megastar Cher, 76, by altering her costume back in 1999, but turned down the chance to become her costume maker.
She said: "I like being surprised and I don't think about the future. Things happen and I generally just go for it. But I was frightened [to work with Cher]. I was also worried it would take up too much of my time. I was scared because I didn't want to mess up."
Throughout her career, the TV star has worked with the likes of David Bowie and famously designed the bunny suit worn by Renee Zellwegger in 'Bridget Jones' Diary'.
Esme got the job on TV by chance when she met a show producer at a party as a replacement for May Martin.
She told the Daily Express newspaper: "[The producer] had asked me if I was interested and I told her yes - I had had a few drinks. We're a real little community. It's fabulous how the sewers bond and help each other."
Esme added that judges often end up forming friendships with contestants after the show but admitted she wouldn't have got the job on television in the first place in decades gone by.
She added: "They'll carry on being friends and will meet up with contestants from] different series. I wouldn't have ended up on 'Sewing Bee' back in the 1970s, 1980s, or 1990s."
The final of 'The Great British Sewing Bee' airs on BBC One on June 29 at 9pm, which will see Esme reunite with fellow judge Patrick Grant and host Sara Pascoe to crown one amateur "Britain's best home sewer".