OK so it's not the cheapest 512mb (expandable via mini sd card) MP3 player out there but it has great novelty appeal and I reckon most young girls would be thrilled to own one. Here's what you get:
Finally, an MP3 player that is perfect for girls of all ages who can't get enough of Barbie! Barbie Girls allows girls to connect to their favourite things: music, fashion, and going online. It's the next generation of fashion doll play! This doll is actually an MP3 player that holds 512 megabytes of music, for young ladies with an eye for fashion and an ear for music! Just plug this USB MP3 player into your computer and transfer all your favourite songs for your listening pleasure. What makes this MP3 player so unique is that it allows hip young girls to customise how they want their Barbie Doll to look! Mix and match trendy clothes, change the hair colour, and accessorise to the fullest with this hybrid of a doll and an MP3 player! The MP3 player comes with accessories inside a window box case. Go online in a virtual settings specifically designed for Barbie Girls owners, and other cool girls alike! In the Barbie Girls chat rooms, make new friends, and talk about fashion, music, and anything else that girls talk endlessly about! This MP3 player comes with fashionable ear buds and a unique code to customise your virtual Barbie Girl online! The MP3 player is PC and Apple compatible for easy use. If 512 megabytes of memory isn't enough to hold your music, the MP3 player also upgradable to 2 gigabytes of memory.
Barbie Girl Turquoise comes with two hairstyles, two faces, two tops, a skirt, a pair of trousers, boots, and wedges that can be interchanged to match the owners current mood and style. The tech gadget also includes adjustable ear buds, a belt clip, and a durable storage case so its easy to take everywhere. Additional packs of fashions, pets, and accessories are sold separately and offer the ability for girls to make their Barbie Girl as unique as themselves.
512 MB on-board memory (up to 120 MP3 or 240 WMA-file songs)
Expandable miniSD slot that holds a memory card up to 2 GB (sold separately)
The device can play any non-DRM-encrypted MP3 or WMA files
Comes with Windows Media Player 11
Built-in rechargeable lithium polymer battery that charges via a USB port
B Stylin, B In Tune, B Connected, with Barbie Girls!
Your Barbie Girls device is a next-generation fashion doll and stylish MP3 player all-in-one
Connect her to your computer to unlock tons of new features on Barbie's website, including special fashions, furniture, accessories, pets, and access to Club Beauty!
Your Barbie Girl comes with a second fashion, adjustable-sized ear buds, belt clip, docking station, registration CD, and reusable storage case
512MB memory, expandable miniSD slot up to 2GB. Windows XP and Vista compatible. Not MacOS compatible
This description comes from the Amazon site because it's way better than Play's. There is also a short video to watch. http://www.amazon.co.uk/Barbie-B-Girls-MP3-Player/dp/B000PD29HO