Dixperfect Women's Retro 80s/90s Inspired High Cut Low Back One Piece Swimwear, Black Crinkle W/ Padded Cups Removable, M

Purchasing for staff for an event and need sizes to be exact. Need to know which chart to go by (picture or link) because not sure if XS is an option?

I'm 5'9", weigh 118lbs (I'm beyond thin), typically wear a size 0 or 00 pants but my bust is a 30C/D. Should I buy a medium?

Hello will medium black be coming back soon? Thank you

I'm 4'10 and 110lb what size would be best for me? I'm also a C cup