Lynda Carter is "afraid" to find out if she can still fit into her 'Wonder Woman' costume.
The 70-year-old star - who played the titular role in the classic live action comic book series in the 1970s - admitted lots of people ask her about the superhero's iconic outfit.
Speaking to Us Weekly magazine for the publication's '25 Things You Don't Know About Me' feature, she said: "Every asks me if I can still fit into my Wonder Woman costume. I'm afraid to try."
Lynda - who has been "a size 11 shoe since the 9th grade" - also revealed how her height has changed over the years.
She added: "I used to be almost 5-foot-1. But I'm not now!"
Elsewhere in the feature, the actress and singer opened up on her lack of culinary skills.
She said: "I don't cook.
"However, I am good at brewing strong ginger tea, by boiling pounds of ginger for several hours. It helps my vocal cords."
And on the subject of food, she added: "I always take the cookies if offered."
When it comes to her musical career, the former Miss World USA - who won the competition in 1972 - opened up on her longevity.
She said: "I've been writing music, jingles and lyrics for 50 years."
Her debut album 'Portrait' dropped in 1978, while the next LP 'At Last' came in 2009, which was followed by 'Crazy Little Things' (2011) and 'Red Rock N' Blues' (2018), and an appearance on the 'Fallout 4' soundtrack.
And while she still makes sure to "exercise [her] body and [her] voice", including doing puzzles.
She added: "I love learning."
Lynda is also always ready to strike up a conversation, and she admitted that's the case even if no one's paying any attention.
She said: "I love the sound of my own voice so much that I talk up to eight hours a day - whether someone is listening or not!"