When shopping for a training bra, it is important to measure your daughter's bra size, consider her personal style, choose a comfortable, breathable fabric, look for a bra with adjustable straps, and try on several different styles and sizes. Encourage your daughter to try on the training bras and provide input on which ones she likes best. It is important to choose a training bra that fits well and provides the right level of support, is made of comfortable materials, and does not cause any irritation or discomfort. Look for a training bra that reflects your daughter's personal style and that she feels comfortable wearing.