How do I tell my mom I need a bra?

I'm 13 and I'm very sure that I need a bra. I measured myself about a month ago as a 28F/DDD. I'm really nervous to tell my mom. I'm not sure if she thinks I need one or is just denying it. When she sees someone running or something and they don't have a good bra she'll say to me, "she needs a better bra for that" so I'm not sure why she hasn't done this to me. Please give me ideas for how to tell her!
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+1 y
Because of the restrictions from covid19, we're not allowed to have more than one person per household in a store at a time and we're not allowed to try on stuff. Should I tell my mom now or when we are allowed to try on stuff?
How do I tell my mom I need a bra?
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