Fearne Cotton is set to open her Fearne on Fashion pop-up store next week.

Fearne Cotton and Matthew Williamson

Fearne Cotton and Matthew Williamson

The 35-year-old radio and television presenter has revealed she will be launching the temporary store on March 3 at River Island's Style Studio in London's Marble Arch, with garments including Matthew Williamson archive as well as her "own wardrobe" staples up for sale, and all proceedings going to wards Save the Children charity.

The blonde beauty - who has four-year-old son Rex and 17-month-old daughter Honey with her husband Jesse Wood - announced her plans in a video on her Instagram account.

Speaking in the clip, she said: "Not long now until my pop-up shop for 'Fearne on Fashion'. I am so excited. I can tell you some little details now. It's going to be on Friday 3rd March and it's going to be at River Island's Style Studio in Marble Arch, London. There's going to be some incredible clothes, you're going to have some Matthew Williamson archive, you're also going to get some William Vintage, and some of my own wardrobe too. With all proceeds going to save the children. Keep an eye out for the store time openings, and swipe left if you want to have a look at some of the clothes you could be buying. (sic)."

However, the British star's store will be open for "one day only", with a House of Holland printed top, a pair of pumps with a cat wearing sunglasses embroidered on the toe as well as a black cut out dress.

She captioned the post: "I can now reveal that my pop-up shop for #FearneonFashion will be open on Friday 3rd March at @RiverIsland Style Studio, Marble Arch, London - for one day only!! Swipe left on this video to see the clothes you'll be able buy, from Matthew Williamson's archive, William Vintage, Mary's Living and Giving Shop, my own wardrobe and loads more... All proceeds are going to @SavetheChildrenUK, so look out for opening times and I will see you there! (sic)."

Fearne first announced she was planning to open a shop during one of the episodes of her 10-part video series 'Fearne on Fashion' with The Huffington Post UK.

Speaking previously, she said: "The secret's out. At the end of this series I'll be opening my own fashion pop-up."