VPL stands for "Visible panty line." See an example of how people use it.
VPL is a person's visible panty line, which is when the outline of their underwear is visible through the clothing on their lower half. It is typically utilized in fashion forums and blogs, and social media to critique women's fashion choices.
VPL by Victoria Bartlett Womenswear
Celebrities Intentionally Showing Their Underwear
VPL by Victoria Barlett Spring 2012 – FashionWindows Network
VPL by Victoria Bartlett RTW Fall 2010
VPL by Victoria Bartlett 2014 Fall Winter Womens
VPL — Aran
Mercedes-Benz Fashion Week Fall '12: VPL by Victoria Bartlett
VPL - What is a VPL in fashion?
VPL letter technology logo design on white background. VPL
VPL by Victoria Bartlett RTW Spring 2011