ooooohhhh, i've been there! my first was the same way! she was a happy spitter though, with no discomfort or anything, just projectile spitting up ALL day long!!! is your a happy spitter? i used to pretty much live with a receiving blanket thrown over my shoulder all the time with her (target sells them i think in a 4 or 6 pack for a reasonable price).
a few things you might try..... first, what kind of bottle does she use? make sure the flow isn't too fast for her (i highly recommend the playtex nursers). also, make sure she isn't eating too much in one feeding. you might try feeding her less....
nothing worked to stop my daughter's spitting up, but doing the above suggestions did help keep her from being quite so messy.... she still spit up, but it wasn't so much of the projectile spitting up like she had been doing.
we had at least 50 bibs (target sells them in 8 or 10 packs i think...) for her, and at least that many burpies too. i got some of the big vinyl lined bibs for feedings and put the small baby sized bibs on her between feedings. fortunately bibs are pretty cute these days, so at least you can coordinate them with her outfits..... my daughter also took a binky pretty much 24-7 at that age, and i think that helped too.
we finally out grew the horrible spitting at around 5-6 months.... she still spit up, but not near as frequently or as bad. she unfortunately spit up until she was around 9 months, i think. but it tapered way down between 5-9 months! so there IS hope!!!