Tall baby!

My daughter will turn a year old next month and she’s very tall for her age along with skinny. She was born premature so she is still tiny! My problem is, 12 month shirts are to short 18 month shirts are to big. 6-9 pants fit length but not around her waist and 12 months are way to big. I seriously can’t find anything that will fit her 🙄 she also has long arms so long sleeves are short for her