Thanks cerfas! I'd give you some more karma if I could!
You can see her recent show there she used some famous fashion nerds such as Valerie Steele to model... and other non-model women friends... I wish I knew what Valerie Steele looked like
One feature she uses a lot is double-faced fabrics, to add interest to the cutting. She did a series of alpacas once where strips of the alpaca ran in opposite directions, the nap creating the illusion of stripes

I'll see if I can find it. She also uses crepe-back satin, doubleknits, etc. This adds dimension to the clothes without ornament.
I love the handkerchief hem... I have an abiding love of square-cut and circle-cut garments... simple shapes can be so stunning.
Also I am a big fan of volumes... I discovered Yeohlee a few years ago when volumes weren't a big trend... and it just felt interesting and right to me.
Her techniques are sometimes more interesting to me than the clothes. I love how she approaches a fabric... to coax possibilities out of a single fabric, to make a simple piece that has subtle texture. She has a tendency to eliminate side seams that I love... keeps her stuff from having that die-cut look.
Ah, those are all really fashion nerd reasons to like a designer's work. I love how she pares it down... sometimes when I am struggling with my designs I realize how difficult it is to do a simple thing well...