10 year old black knickers

[BeccyMawson]

I'm looking everywhere for plain black knickers for my 10 year old niece. She is very slim and quite tall... not sure if adult sizes would do?
She wears leggins a lot but her pants show through so she needs plain black ones... any help would be great.

Try size 6 adults - they should be fine.

I managed to get some in M&S last year. Didn't think it would be so hard to find dark pants for a girl.

I got my dd some from peacocks age 12-13

M and S do a girls' multipack including black.

Peacocks. They do bras too.