The Britain's Got Talent judge has signed a deal with Scholastic to write two books about Aurora Beam, a young girl who happens to be a superhero.
The ex-Strictly champ said she wanted to "create a strong female character who young girls and boys can hopefully be inspired by and look up to".
The singer and presenter confirmed the news on Instagram.
Dixon said she was "delighted to be working" with Scholastic on the books, the first of which will be out next spring.
The deal sees the former Mis-teeq member join a growing number of celebs who have written books for kids, including:
Nine stars who became unlikely children's authors
Earlier this month politician George Galloway revealed he had signed a deal to write a series of children's books about an "ethical pirate" called Red Molucca.
DJ Greg James, meanwhile, has teamed up with Radio 1 colleague Chris Smith to write a series of books about an ordinary boy - "Kid Normal" - who attends a school for children with super powers.
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Jane Hutt's comments came after a lengthy row over Scottish tax and funding arrangements was settled.
She called for an independent review of Wales' funding arrangements amid the promise of power to vary income tax.
Welsh ministers fear the UK Treasury could cut the block grant before Welsh taxes are sufficient to cover the gap.
Control of two other taxes - stamp duty land tax and landfill tax - passes to Wales in 2018.
Ms Hutt said: "Crucial talks lie ahead for us as we seek to establish a fair fiscal framework for Wales which takes into account the properties of our tax bases, our devolved responsibilities and assigns the appropriate risk to the Welsh Government."
She said some of the methods suggested by the UK government for adjusting the block grant in Scotland were contrary to the principle of "no detriment", outlined by the Smith Commission on devolution in Scotland.
"Those methods, if applied to the devolved taxes in Wales, would have significant implications for our future investment in public services in Wales," said Ms Hutt.
"The Welsh government would not be able to accept those terms and this was not the basis upon which the Assembly agreed the devolution of stamp duty land tax and landfill tax to Wales."
An independent body is to review the fiscal framework in Scotland, and Ms Hutt called for a similar arrangement for Wales.
A report from the Wales Governance Centre on Wednesday urged ministers to avoid a repeat of the year-long row over plans to devolve income tax powers to Scotland.

Roberts' low finish came after team-mate Christian Burgess was cautioned twice inside a minute, firstly after a tussle with Francois Zoko and then for fouling Ryan Dickson.
Zoko had earlier pounced on poor Pompey defending from a corner to put the Glovers ahead at the far post.
Portsmouth stay in the play-off places, with Yeovil still next to bottom.
Portsmouth manager Paul Cook told BBC Radio Solent:
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"It's a fantastic point, but never ever at any stage were we playing well in the game or we were in control of the game.
"I thought Yeovil were excellent on the day. It was a difficult game for us, but the reality of it was we never played well and we have dug ourselves a point and at the end of the season I think we will look at that point as a good point.
"We just weren't at it today like we were last week. As a manger it always comes down to me, I accept that, but when you're trying to change a culture of a club it is hard."
Alesha Dixon is to become the latest celebrity to try her hand at writing books for children.
[NEXT_CONCEPT]
Crucial talks lie ahead to weigh up how the Welsh budget is fairly funded between Whitehall cash and devolved taxes, the finance minister has said.
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Gary Roberts rescued a point for 10-man Portsmouth with an equaliser at relegation-threatened Yeovil Town.