Sisters, look over here: "Bra Washing Protector"

Let's first assume that the following three conditions are true:

(1) You are a female.

(2) You have no time to wash clothes by hand, not even bras.

(3) The bra is very valuable, and machine washing is unacceptable.

Here is one of the solutions: BraBaby, or Breast Bra (unofficial translation name) - a bra protection rack for machine washing.