Thanks for your reply! First I have some information on April below pertaining to the story as a whole.
April McKenna (Chinese, Scottish, 22, they/them) is a senior working on their social work degree and wants to work to help kids. They also enjoy fashion. During summers they help out at a camp teaching kids to play guitar there. In Andrew’s band, they play bass and are kind of known for being a terrible singer even if they always try to bump in to sing with Andrew. April is kind of the parent of the group as they are always trying to resolve issues and keep everyone together but it’s beginning to reach a point that they might not be able to keep everyone together.
They live in a small cabin that the band uses for band practice. April has short hair and a strong slim build.
April prefers they/them pronouns, is bigender and their style changes depending on how they feel per day but it's predominantly androgynous.
Now time period for when they were 11 would be the late 2000s. Now they use a sports bra. But they didn't know much better when they were younger, but your point on the disclaimer is valid so it may be something for me to remove or reword.