Fearne Cotton wants to have "past-the-bum mermaid hair".

Fearne Cotton and Jesse Wood

Fearne Cotton and Jesse Wood

The 34-year-old television personality has admitted she is on a mission to grow her hair long so she can resemble a mythical sea maiden, although she fears she will cut her blonde locks immediately after if she succeeded in reaching her target length.

Speaking to Glamour magazine about her beauty wish, she said: "Now I'm gung-ho about growing it as long as I can - splash is my inspiration. Past-the-bum mermaid hair. Then I will probably chop it all off again."

However, the mother of three - who has son Rex, three, and seven-month-old Honey with her husband Jesse Wood - has confessed she felt most comfortable at star studded events with a choppy bob.

She explained: "I loved having a bob it was really fun and easy and actually I felt much more comfortable doing red carpet events in a glam dress with a cool funky hair cut."

Meanwhile the radio presenter - who is currently the face of Garnier's Olia B Super Blondes hair dye - is contemplating changing the colour of her hair, although she currently uses the sweeping technique to highlight her tresses.

Speaking about her next tint, the former 'Top of the Pops' co-host said: "Not sure yet but it will be blonde but a new shade.

"Because I have balayage - it's really low maintenance, which suits my lifestyle. I let it grow out and actually I quite like when it's super rooty. I dye it every two to three months maybe even longer sometimes if I'm not working as much, I like when it grows out.

"I always let my hair air-dry at home otherwise it goes really flat and straight. I like It to be rough and messy ... I always use my fingers to add extra texture and I swear by dry shampoo."