My gf(?) is considering transitioning and I'd like to get her something cute

Hi everyone!

So my (24 FTM) gf (23 MTF/questioning) is strongly considering transitioning and she doesn't have many femme clothes.

I'd love to get her something she feels safe and cute in.

She's 1,90m (I think it's 6'2") and is a size 44 (we are brazilians, so it translates to a 10 in US and 14 in UK).

We've never really talked about what kind of clothing would make her euphoria hit, but I've seen her eyes sparkle at some feminine tops/flowy pants.

I was just wondering if there's something more I need to consider before purchasing the outfit and which piece of clothing you guys would recommend for someone her size. She's very insecure about body hair so maybe something that covers up her arms? I'm not sure.

Thanks in advance!