But g strings wreck downstairs when riding and briefs give vpl! And sports bras are really unattractive at shows,
Sports bra and a small g string
No yet a special type for horse riding like yoga pants or maternity bras. Wear waht ever is comfrotable(to you and not to the horse)
Wear a sports bra, it doesn't really matter with knickers, just something you find comfortable
Just wear whatever. It all depends what you are doing. I have the same bra size just wear a sports bra and any type of underwear