Buying clothes for my fiancee

"Hi...Erin," you say, taking a glance at her nametag, "Yes, I could use some help. I'm looking to buy my fiancee some clothes for the holidays. A full workout outfit, perhaps a sundress, and some underwear."

"Ah," the redhead smiles, "I think I can get you just what you need. What size is she?"

"She's usually wears small, waist size 23, hips 34...no 35 I think."

"And her height and cup size?"

"She's 5'7.5" and 32DD." you answer.

You see Erin raise her eyebrow at that, "wow those are quite the measurements, you fiancee must be blessed with quite the body!"

You smile, "Indeed, although your figure also looks hard to beat."

She blushes at that, "Haha, um, thank you, I try to keep myself in shape, especially working here. So which piece of clothing should we try first?"