2 karate uniforms wanted


I need two karate uniforms-one for my 10 year old son Jonny (he's a big boy) and one for 8 year old Melissa.  I have no idea how the sizes run.  If anybody has old ones their kids have grown out of, I'd be happy to buy them from you.  Contact me at 314 494-3351 after 3pm or leave a message and I'll get back to you after work.  Thanks
Sarah Rush