The inexpressive, hyper-simplistic, stiff hipster girl style. Similar to the noodle-armed, cucumber-mouthed Adventure Time style in how little genuine emotion it gets across and how flat and boring it is (likely intentional, given the ukulele hipster's desire to be ironic or at least avoid complete emotional sincerity) - except here, the faces look like they came out of Christian iconography, and instead of being awkwardly rubbery, the anatomy and poses are awkwardly angular and pointy. Yeah I am mainly dunking on Noelle Stevenson here though this old Anita pic also springs to mind.
Noelle's comic Lumberjanes actually wasn't drawn by Noelle outside of the covers. The other artist, Brooke A. Allen, is... actually pretty competent, if you look at her old art. But she had to try and draw in Noelle's awful style, and the final result was a goddamn mess. That comic has some of the ugliest, most incoherent and half-hearted art I've ever seen, with the animal designs showing signs of competence but the humans being the wonkiest shit imaginable. It feels like she drew it all with a gun to her head and secretly hated her job.
Also note the dumbass mouse hands.
I'm not sure why exactly, but while the "cucumber mouth, noodle limbs" style breaks gender boundaries, I can't think of a single man who draws in this other style. Can't say precisely where it started, but I assume Kate Beaton influenced a lot of artists to draw this way. I won't post her as an example though - as much as I personally dislike her style, I can't say it's irredeemable, especially as of late when she tends to make faces more anatomical and expressive. I get why others would like her stuff, at least; meanwhile the derivatives are pure tripe.