What is cool for 11 year old girls? Budget approx £50

[StewardsEnquiry]

Please help me!! I need to buy two Christmas presents for my nieces who are 11 years old. They are cool and trendy, and already seemingly have everything. I've scoured the Christmas threads for ideas and every time I think I've come up with a solution for a gift it turns out they already have it.

They are sporty, into football and netball, like Taylor Swift, they like fashionable skincare that is popular at the moment (eg Drunk Elephant or Bubble).

Ideas that I have had that are no good: a book (doesn't much like reading); a photo book about Taylor Swift (already have it); some Bubble skincare (someone else is already buying); some of that bum bum cream/body spray (already has loads).

Tentative ideas I had but I don't know exactly what to get:
jewellery of some kind? Is anything cool amongst 11 year olds? Is there a brand I could look at?
Is there a haircare equivalent of Bubble etc that is a brand they would really like because it is popular on Tiktok?
Are White Fox hoodies still cool?

Or something else completely? Please hit me with any and all of your ideas and wisdom because I'm starting to panic a bit now!

Thanks @SootspriteSearcher I will have a look at that.

If they already have sol de Janerio don't get them more of it.

Some of the suggestions on this thread are wrong. Do not get a Boots or Superdrug voucher! A Sephora voucher would work.

If you want to get something from Lush it should be the Sticky Dates range as that trended on TikTok. Not just any random Lush thing.

I would recommend Summer Fridays lip products (the Christmas pack of minis) or Rare Beauty (the liquid blush). The latter is really too grown up but not more so than what they already have.

OP, please post what you are considering getting so we can advise if it is likely to work! You're correct that this is a minefield.

Brandy Melville is cool because the one size means only thin women and girls wear it. If they like cute stuff get the teddy print, if they prefer girly stuff get the mini floral print or mini cherry print. The loungewear has trended on TikTok.

Sorry, didn't mean to have autocorrect screw up my spelling of Sol de Janeiro!