Kylie Jenner is no stranger to the spotlight—and once again, she’s made headlines. This time, it’s not about lip kits or baby names, but about her breast augmentation. She recently opened up about her procedure, sharing details that have sparked curiosity across the internet. So let’s break it down—surgeon style—to explain exactly what Kylie had done and what it means for anyone considering a similar procedure.

Anatomy 101: What Are We Working With?
To understand breast implant placement, we need to look beneath the surface:

  • Beneath the skin lies breast tissue
  • Under the breast tissue is the pectoralis major muscle
  • Beneath that? The rib cage

The pectoralis major (PEC) muscle is a large chest muscle that originates from the clavicle, sternum, ribs 1–7, and a small part of the external oblique. It inserts into the upper arm bone (humerus). This muscle plays a key role in determining where and how implants are placed during breast augmentation surgery.

Types of Breast Implant Placement

  1. Subglandular (Over the Muscle)
    The implant sits directly beneath the breast tissue and above the muscle. This technique offers quicker recovery but may show more visible rippling, especially in patients with less natural tissue.
  2. Subfascial
    The implant is placed under the fascia, a thin layer covering the muscle, but still technically above the muscle. It’s a lesser-used technique but can be beneficial in certain patients.‍
  3. Submuscular (Under the Muscle)
    This is one of the most common approaches. The implant is placed beneath the PEC muscle, offering a more natural slope and better camouflage—especially for thinner patients.‍
  4. Dual Plane (Kylie’s Choice)
    So, what did Kylie Jenner have? She shared that her breast implants are “half under the muscle.” This is called a dual plane breast augmentation. In this approach, the upper portion of the implant is covered by the PEC muscle, while the lower part is left beneath just the breast tissue. This technique helps in cases with mild breast sagging (ptosis) and creates a smooth, natural-looking transition from the chest to the breast.

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It also reduces the risk of a common complication known as the waterfall deformity, where the breast tissue appears to sag off the implant. Dual plane placement helps the implant and breast tissue move together more harmoniously.

Why Dual Plane Works for Kylie—and Might Work for You
Kylie’s result is a textbook case of choosing the right technique for the right anatomy. The dual plane method offers the best of both worlds: muscle support for upper implant coverage, and freedom for the lower pole of the breast to shape naturally.

It’s especially helpful for:

  • Patients with mild ptosis (breast sagging)
  • Thinner patients wanting a natural slope
  • Those looking for long-term aesthetic outcomes

Considering Breast Augmentation?
Choosing the right implant placement is just as important as picking the size or type. Every body is different—and so is every surgical plan. Book your consultation today to find the technique that best fits your body and aesthetic goals.

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