It doesnt matter. I know girls who use Bras that are in the "budding" phase. The best time to get one though is when you actually fit into a real one
You should not touch a girl's bra without her knowledge and permission. If you are not close enough to a girl to ask her how to touch her bra, then you don't need to worry about it.
Go shopping and look around. then find the bra section and say ''mom ive been thinking, every girl at school has a bra, and i think i need on to''
1AA
You call a girl with no bra on by her name. She is no different than a girl with a bra on, she is a person who made her own clothing choices.
There is no "normal" bra size. It varies from girl to girl.
Around the age 9-13, a girl will get her first bra or training bra.
A girl wears a bra by clipping using the clips.
Your only option is to guess the girl's bra size. If you are not buying her a bra, you don't need to know her bra size. Try to find out something that's important to her instead.
Yes, it's fine for a girl to wear whatever she wants and wearing a bra will cause no harm. Although there is no need to wear a bra to fit in, or even to fit in, sometimes it's okay not to fit in.
Bra sizes have nothing to do with waist size. A slim girl can have a large bra size or a small one. It just depends on her DNA.
I think it should be when you have a 'chest' and you need one. I need to start wearing one and I'm 10.
You cannot tell a girl's bra size just by looking unless you have years of experience in professional bra fittings. Unless you are planning to buy her a bra, you really don't need to know. Focus on finding out more about her interests instead.