Any picky 2yr old eaters???

So this isnt actually about my son who is 2 but Im keepn a very close eye on it... he trys or eats most things i give him.. its my 4yr old. She is the pickiest eater and it only happened when she turned 2. She just flipped a switch, went into terrible two territory and sorta stayed there. A very very strong willed child. She used to eat fruit m veges but now wont touch the stuff or attempt any new foods. Her diet is so limited. Its gotta look plain, be pretty much white. I can only get fruit into her in the form of baby pureed sippys. Only meat I can get into her is from a meat pie which isnt the greatest. Ive tried making homemade but she wont have it.