Sisters Thai, The Living Room Café, web site 1, web site 2, 4004 University Drive, Fairfax, VA, 703-267-9619 (Metro Trip Planner – opens in new window) [Google | NoVA Mag | Don Rockwell | Yelp]
It doesn’t even try to look like a Thai restaurant, but rather goes the cutesy, overtly decorated for educated people in cutesy ways route. It has an extensive selection of Western desserts and trendy drinks, often involving milk products. It has Thai food too. The latter is pretty good. Not comparable to my favorite Thai places, and not worth making a trip for, but pretty good if you are hanging around Fairfax anyway.
It is more expensive than most Thai restaurants. Furthermore the “in Thai only” menu is an affectation of sorts, and what you get from that menu is not noticeably more authentic than anything else hanging around the restaurant, the crème brulee excepted that is. Still, it tasted pretty good.