I've always felt it was so sweet and feminine a hue. And looks stunning with black and white -- without the overt saccharine-ness that comes with black and white and pink ensembles. (Though baby blue and rosy pink make a good couple themselves, too. It also looks good with mustard. And oxblood. And gray. Ok, hey baby blue, who do you not look good with!?)
Fittingly, my favorite fun fact to share at baby showers is that earlier in the 20th century, baby blue -- in all its unassuming softness -- used to be the designated color for girls, and pink -- a bolder color -- for boys. If you find that sort of thing as captivating as I do, here's a Smithsonian article to peruse.
Anyway. Black and white and baby blue has such a soothing quality. Dreamy, even -- almost soporific. Maybe that's the real reason Alice fell asleep in the flowers! At the top of my (shopping) list this year is to track down some sort of peter pan-collared dress in this hue -- and pair it with white tights and patent black flats. Though if I find something resembling that tutu or that coat, I'd be fine with that, too. As if that needs to be said.