Reddit reviews Gossard Women's Glossies Deep Brief, Black, S

For everyday undies, I'm pretty committed to Madewell cotton-modal and the mesh-trim panties because I've been so pleased with them. They can also be purchased at Nordstrom. Not sure where you are but both stores ship internationally. Looks like I found a few pairs on Amazon, too, here and here but honestly Nordstrom provides great customer service and makes online shopping and returning easy, and I prefer it over Amazon if you are in the US. While basics, the silhouette of these panties is sexy and modern and they often have fun prints. The bikini and the thong are my go-to styles for everyday for comfort and discreet wear. Modal is a super soft fabric, one of my favorites, so I think a cotton-modal blend is very comfortable. If you like sheer, check out the mesh-trimmed ones. They are not cotton but I still find them just as comfortable for daily wear. I really like them without lacy extras because for everyday panties, lace eventually wears out, looks shabby, and is uncomfortable. Madewell also sells a handful of pretty, lacy, sexy options, though. The size XS would probably fit her. If she needs something smaller than a 0, many stores sell size 00, though for panties most stores I see just stick to XS S M L sizing (XS would be appropriate for size 0 or sometimes 00).

Edit: I found a few more sheer options. The Glossies line by Gossard has been around for a while and they are shimmery and can be found on Amazon and many other places: thong, brief, high waist brief. I Recently found this Cosabella sheer option, too: thong, bikini style. Both brands also have a number of more fancy, lacy options. More: On Gossamer Mesh Bikini and Bluebella for creative options.