Dolly Parton jokingly suggested that she always looks happy because of Botox.
The country music legend, 75, has made no secret of the little nips and tucks she's had to change her looks over the years.
The singer joked about the effects of her Botox injections as she appeared as a special guest at the star-studded #WOW: Whole Health Includes Mental Health event at UCLA on Thursday.
The star chatted at the summit and performed an acoustic version of her song Light of a Clear Blue Morning for the audience.
During her talk, she quipped: "I'm often told I look so happy, but to be honest ... that's the Botox. Well not all of it, but some of it anyway!"
Turning to more serious views, Dolly spoke about the stigma surrounding mental health.
She said: "But seriously, we all experience moments of anxiety or depression at one time or another.
"I believe it's how we handle those moments that ultimately defines us."
The event was hosted by Friends star Lisa Kudrow and saw a number of big names take part in the discussion.
Dolly recently asked her home state to cancel plans to erect a statue of her.
The singer asked the Tennessee legislature to scrap a bill proposing that she's commemorated in a statue in Nashville - at least for now.
She explained that she doesn't feel now is the right time to be put on a pedestal, given everything that's going on in the world as the coronavirus pandemic continues to effect people around the globe.
She wrote in a statement on Instagram : "I want to thank the Tennessee legislature for their consideration of a bill to erect a statue of me on the Capitol grounds.
"I am honored and humbled by their intention but I have asked the leaders of the stage legislature to remove the bill from any and all consideration.
"Given all that is going on in the world, I don't think putting me on a pedestal is appropriate at this time. I hope, though, that somewhere down the road several years from now or perhaps after I'm gone if you still feel I deserve it, then I'm certain I will stand proud in our great State Capitol as a grateful Tennessean.
"In the meantime, I'll continue to try to do good work to make this great state proud."
Last year, Dolly announced she was giving $1 million to Vanderbilt University Medical Center in Nashville, which was one of the trial sites for the Moderna vaccine, which research showed was nearly 95% effective.
And she later said she was "very honoured and proud" to have given the money towards the research of the Covid-19 vaccine.
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