What type of bra is easy for an elder with Alzheimer’s to use?

My mom is in early stage 6 Alz. She's starting to have problems dressing herself, but still wants to do it on her own. Putting on her bra is the biggest issue right now. Has anyone experienced this and found a style that is maybe easier to put on? I thought about sports bras, but she has *never* worn one. So I'm not sure she could learn how to put it on. She is a larger woman with a larger chest and really is more comfortable once she has the bra on. So going without isn't really an option for her.