Please feel free to share. “Amazing Grace”
It is beautiful, but at 15, I wouldn't buy a half size.
Opportunity is often missed because it wears suspenders and looks like hard work.
It looks beautiful, but I agree... At 15, and your height, a 1/2 size would be pretty small. There are videos online to show you how to measure your arm to pick your size, but I am confident you would need a full size (4/4).
World's Okayest Fiddler
As Fiddlerman pointed out, arm length is a key factor. At your height, your arm length is mostly likely in the full size violin range, but everyone is different. Measure your arm and see which category you fall in. If your measurements are borderline between two categories, see if you can try out the two sizes.
Finger length will also make a difference. I'm not sure where you are in terms of learning violin, but I found that the violin size really started making a difference when I started using 4th finger. I am a short adult who started in a full size but switched after a few months to a 7/8. The smaller size works much better for me.
Sound quality will generally be better with larger violins, so you will want to use the larger size if your arms and fingers are long enough to allow it.