If you're a girl looking to get this jacket I hope this review will help. I'm 5'2 117lbs a 34B petite average body. I initially ordered the YM 10/12 and it was too tight in the arms and under the armpit. I returned it and ordered the YL 14/16 and it fits perfectly. I was afraid that the large was going to look too big and bulky but it wasn't. Length of arms is perfect and does not feel tight. It feels very comfortable and it looks so good on. If you're unsure what size to get I would recommend getting a larger size and then work your way down if it's too big for you.Can not say enough positive things about this jacket. I was a flyer for 30 years and was issued this type of jacket many times, I can say the Alpha Industries jacket exceeds the quality of the government issued jackets we were issued! The attention to detail on Alpha's jacket is spot on. The knit cuffs and collar are awesome, the sleeve pocket is very authentic as are the zipper pulls. The stitching throughout the jacket is tight and looks like the original issued jacket. The patches are not cheap litho pictures, they are actually first quality miniatures. They even included a government product ID tag sewn into one of the pockets. Just very impressed with the quality and attention to detail of this jacket.Bought it for my son for Christmas, because he just watched “Top Gun” and now he wants to be a pilot. He practically sleeps in the coat. The Top Gun patch reallllly made his day!This coat is comfortable, fits as expected and was just what my son wanted for Christmas. He is extremely interested in anything military.So good!!⭐️ Perfect! Keepsake long after he grows out of it!!⭐️⭐️⭐️⭐️⭐️THE REASON I RETURNED IT BECAUSE IT WAS TOO SMALL, I THINK YOU SHOLD MAKE THESE KIND AND LOOK AND PATCHES IN MENS SIZE NOT JUST FOR BOYS AND YOUTHS, YOU WILL SELL LOT OF THOSE IN MENS SIZESTHANK . HOSE YOU WILL MAKE IT MENS SIZESI bought this for my 7 year old son and got a size 8. It was a tad tight, but fit well enough if he did not wear a sweater under it. He liked it more than I thought that he would and pretty much wore it everyday this winter. We live in New England and this year was a cold winter.The jacket was warm enough and held up well. It is a rugged little jacket and still looks clean and new. That is pretty remarkable. If you knew my son, you would understand. He could wear a suit of armor and somehow find a way to destroy it.This is a great jacket and well priced. I will probably buy another one this year, but go up one size.I love this jacket ! It look just like the picture !! I ordered this jacket on Friday got my package on Sunday !! I purchase a M I'm 5'1 & w125 pounds you can wear this jacket with anything I'm going to buy my son the same jacket this jacket do runs big get your true size if you want it kinda big on you get a size up