Since your boyfriend has no other problems, he just likes to wear women's clothes, which is normal, because many people especially like beautiful clothes now, because everyone has a love for beauty, and men must have an aesthetic perspective, so some men especially like to wear women's clothes, so they can also look at their figure and face value from another aspect to see if they meet the requirements of a beautiful woman.
If you can't accept this matter, you can take him to see a psychiatrist. This kind of problem is a small one, but he is interested in doctors' clothes.