BBC presenter Zoe Ball has announced she is stepping down from hosting the Radio 2 breakfast show after six years in December.
The 53-year-old took over the morning programme in 2019 from Chris Evans.
Scott Mills, who currently presents the Radio 2 weekday afternoon show, will take over presenting the programme and has said he is "beyond excited" to assume his new position.
Ball said she was "thrilled" Mills would be following in her footsteps once she departs in December.
Making the announcement on air, Ball said: "I've decided it's time to step away from the early alarm call and start a new chapter. You know I think the world of you all listeners and it truly has been such a privilege to share the mornings with you."
Commenting on her replacement, she added: "Scott and I go way back to our Radio 1 days, when he was doing early mornings before me. He's been a close friend for years, and I'm beyond thrilled it's him taking over the Breakfast Show.
"Breakfast has always been his dream, and what a year he's had - from racing around the world to his beautiful wedding to Sam. He's not only a blooming brilliant producer but one of the best in radio. I can't wait to tune in on the school run!".
In a statement, Mills said: "Zoe and I have been such good friends now for over 25 years and have spent much of that time as part of the same radio family here at Radio 2 and also on Radio 1. She's done an incredible job on this show over the past six years, and I am beyond excited to be handed the baton.
"It feels ever since recording my first shows as a kid for an audience of one, my mum, all roads since have led to this amazing opportunity. It really is a lifelong dream come true to follow in the footsteps of Sir Terry, Chris and Zoe to be the new presenter of the Radio 2 Breakfast Show."
Ball was the first female host of the Radio 1 Breakfast Show in 1998, a post she held until 2000.
She also co-hosted the BBC's Saturday morning children's magazine Live & Kicking alongside Jamie Theakston for three years from 1996.
In her official statement, she said: "After six incredible years on the Radio 2 Breakfast Show, it's time for me to step away from the very early mornings and focus on family. It's been a privilege. I think the world of you listeners and I'm grateful to my bosses here for their support, especially this year."
Ball said her last show will be on Dec 20, adding: "Just in time for Christmas with plenty of fun and shenanigans. While I'm stepping away from the Breakfast Show, I'm not disappearing entirely - I'll still be a part of the Radio 2 family, with more news in the New Year.
"I'm excited to embrace my next chapter, including being a mum in the mornings, and I can't wait to tune in on the school run!"
Helen Thomas, head of Radio 2, said: "Zoe has woken up the nation on Radio 2 with incredible warmth, wit and so much joy since Jan 2019, and I'd like to thank her for approaching each show with as much vim and vigour as if it were her first. I'm thrilled that she'll remain an important part of the Radio 2 family."
Ball has also presented the BBC spin-off show Strictly Come Dancing: It Takes Two, and ITV's reality competition show Mamma Mia! I Have A Dream.
The new host of the Radio 2 Breakfast Show will be announced today, Ball said.