ARB Blanks Valentine shirt girl size 8, looks to run smaller

The tag says size 8 but it looks to run smaller. Possibly fits like a size 7? Length of shirt measures 19.5. Sleeve length measures 16”, sleeves look like half sleeves or 3/4 sleeves. There is a small stain on the front , last photo that I uploaded shows the stain, it didn’t come out when I washed it. I’m second owner of this shirt but my daughter never wore it. From a pet free/smoke free home. Please go by measurements that I provided! The color is a pinkish/purple color. So cute for Valentine’s Day!