Paste the snippet in your sections/product-template.liquid file where you want your reviews to appear. Usually this is just below the product.description tag, the code may look something like this:

CLASSIC BRA WITH ADJUSTABLE STRAPS
StyleNo: #NT-6665AB

Description

V-FRONT BRA WITH ADJUSTABLE STRAPS AND REMOVABLE BRA PADS

* *In Packs of S/M (2) : L/XL (4) **

BODY LENGTH (HIGH POINT BUST): 7", BUST: 25.5" approx.
- MEASURED FROM S/M

* COLOR MAY VARY SLIGHTLY DUE TO MONITOR RESOLUTION

IMPORTED
fabric 92%nylon 8%spandex
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