Osculable means kissable, but is a much more beautiful word. According to the OED, poor osculable has only been used once, in 1893, to describe the Pope. So the word is nearly virginal and should be taken out and shown to the world.
The Latin for kiss was osculare, and the obscure English words thence derived are wonderful. There's an osculatrix (a lady who kisses), an oscularity (a kiss), and an osculary (anything that can and should be kissed (although this was usually a religious relic)).
So repeat after me:
Pretty? She's a regular osculary.
It's one short of fangast.
There are also a fair few osculatory words in geometry, for when two curves touch at a single point they are said to kiss.