I'm 30 years old and still kinda new to having boobs. Looking for something comfortable in 38A.

Hi. I have not been a woman for very long and my boobs are just growing so I'm a bit confused as to how to bra shop. So far I've only bought bras from wal-mart and the grocery store and as you might imagine they wear our and get itchy fast.

Anyway I went into Aerie for a professional fit (called ahead and they do that) and I went in and they told me I'm 38A (and that a 40A might also work). They had a really nice looking selection but they didn't have that size. I tried on their bras and I thought the 36A was perfect except the band was too tight and the cups rode up on my armpits too much. I tried it with an extension which helped but still the cups sit a bit too high. I tried a couple other stores in the mall and nobody had 38A. Closest is 36A and 38B. (I also learned today to not put bras in the dryer)

Can anyone recommend a brand that sells 38A that has comfortable (as opposed to itchy) fabric? Also looking for wireless.

Thank you.