You won't believe which color eyeliner Princess Diana was obsessed with

Princess Diana was a true royal dream inside and out. Her beauty looks continue to influence many today, making the Princess of Wales simply timeless. Although Diana typically kept her makeup chic and natural, she had a signature makeup hack that went unnoticed for some time. That’s right, the Princess of Wales would apply electric blue liner on her waterline to brighten up her look and have some fun. Inspired by the '80s, Princess Diana’s makeup detail pays homage to the retro vibes of her time. The royal’s longtime makeup artist, Mary Greenwell was the mastermind behind helping her incorporate her blue hue into every makeup look. Keep scrolling to see how much the Princess of Wales loved her blueliner.  

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Bangkok, Thailand

The Princess of Wales rocked a light blue color on her waterline as she dined with the King of Thailand during her visit to Bangkok in 1988. Talk about chicness galore! 

Paris, France

Net veil and all, Princess Diana sported her blue hue during her visit to the Arc de Triomphe. 

Munich, Germany

Princess Di was all smiles as she attended a banquet in Munich during her official tour of the German lands with her signature makeup look. 

Tasmania, Australia

Like a true royal, the Princess of Wales wore a red number and her Spencer Tiara during a reception at the Wrest Point Hotel In Hobart, Tasmania. Of course, her sky blue liner was present! 

Hong Kong, China

While in Asia, the royal stepped out in a red jacket and purple pants along with her favorite color liner to complete the look.