FX Krystal's, or Lee Bo Na's fashion style is a hot issue. Her fashion style is a textbook for the teenagers. Fashion style of Lee Bo Na of "The Heirs" resembles that of Blair Waldorf in "Gossip Girl." Blair's trademark, head band and luxurious school look reminds us those of Lee Bo Na. FX Krystal added her own fashion sense in addition to the head accessories and luxurious school uniforms, upgrading them into her own personal style.

Although FX Krystal is a high school student in the drama, her fashion sense is more mature. Since she wears the Empire high school's uniform for the most part of the drama, she shows off cute, cheerful school look, adding trendy items onto the luxurious school uniform. She loves to use accessories such as a beret or a head band. These accessories on her luxurious school uniform made the fashion style of the top 1% high school student.

Outside of the school, her looks are lovely. She uses the trendy item, checkered pattern, to grab the attention. She adds short skirts or shorts on the pattern, creating a lovely look. Stylist Choi Kyung Won said on FX Krystal's looks, "The fashion keyword of heiress Lee Bo Na is natural, luxurious style through mixing and matching trendy items."