When it comes to breast augmentation surgery, deciding whether to opt for silicone or saline is not the only consideration patients must think about. Size is often the biggest consideration.

Some doctors are now recommending adjustable breast implants for those who may not be sure just how big or small they want their breasts to be.

"A woman comes in with one idea where she wants to be," a Chicago-based plastic surgeon who is a proponent of the adjustable implants recently told the Herald-News. "But after a couple of months when the swelling settles down, she might wish the size was bigger … With the adjustable breast implants, we have the luxury of coming in three months later and asking, 'Where do we stand now?'"

Instead of deciding on a size before the surgery and hoping for the best result, doctors who use adjustable implants place a small port that connects to the implant underneath the skin. If the patient decides to go a little bit bigger, the plastic surgeon injects additional saline into the implant. If she wants a little less volume, the doctor removes some.

"With adjustable breast implants, you can adjust the implant size postoperatively, up to 20 percent of its original size," a Philadelphia plastic surgeon told ABC News. "It's a fantastic way to control the breast size postoperatively, because people do change their minds."

He added that a patient who changes her mind about the size of her breast implants must undergo another surgery if she opted for a traditional breast augmentation surgery.

Changes can be made when the initial swelling subsides, around three months after the surgery, until about six months post-surgery. At that point, the port is removed through an outpatient procedure done under a local anesthetic

"It has become a lot more popular nationally the last couple of years," a Chicago based plastic surgeon told the Herald-News. "The reality is, you really can't go wrong. You can see them in the mirror and can have the size changed as many times as you want in the window of those three months … I think this is all positive."

According to the American Society for Aesthetic Plastic Surgery (ASAPS), breast augmentation remained the most popular surgical procedure performed by plastic surgeons last year, with more than 318,000 individuals undergoing the surgery.