How Long Should I Wait to Buy New Bras After Breast Implants?

I recommend a no underwire seamless bra during the initial 6 weeks.  The Coobie brand is almost universally liked by my patients.  After 6 weeks you should be fine to purchase any bra brand you like.

The patient can return to a wired bra (and buy new ones) once the incision has healed. This is typically at 4 to 6 weeks. By this time, the patient will have had their one-month follow up, so they can confirm with their doctor. 
By 4 to 6 weeks, the majority of swelling will have decreased as well.
You should have your final result at about 3 to 6 months after the procedure. So don't spend your entire bra budget at week 4.
I hope that answers your question on when to buy new bras. It’s great that you’re doing this research. I always say that the best patients are informed patients.
You might also want to research your options for breast implants. Choosing the right implant is the number one concern among women considering breast augmentation. Did you know, there’s actually a way to select a implant shape, size, and profile that is perfect for you?
A term that I use with my patients for the perfect implant is the “Pony Implant”.
So what do I mean by “perfect”? Well, a Pony Implant has three qualities to it. First, the implant meets your beauty goals. For example, you want to your breasts to look fuller while still appearing natural.
Second, when you chose your Pony Implant, you walk out of your consultation 100% confident that you’ve chosen the right shape and size for you. In other words, you won’t be second guessing your decision, and you won’t be afraid of having gone too big or too small.
And third, after your procedure, you are thrilled with your results, and say, "I’m so happy. This is exactly what I wanted!"
That’s the Pony Implant. And the great news is that there is a simple process to go about finding yours.
This issue of selecting the right implant is so important when it comes to patient satisfaction or dissatisfaction that, again, I really encourage you to learn more about it.
Thank you for reading and best of luck on your journey!

Hello Best Money Ever Spent (Great User Name!), You can shop now, I just wouldn't make any La Perla/Agent Provocateur type investments quite yet. You still have another few months they may change and even if your breast size stays the same, how your bras fit may vary. Underwires are usually okay after a month, but you must heed your surgeon's direction on that. Recommendations are based on specifics related to your case, they may have their reasons for keeping you in a sports bra this long. Talk to them, then go shopping!