Harnaam Kaur from Slough in Berkshire in south-east England, described her entry as "absolutely humbling".
"Now with a beard measuring as long as six inches in places, she overcame years of bullying to take ownership of her appearance and achieve this record title at the age of 24 years 282 days," her record citation reads.
"She describes her place in the 'Guinness World Records' book as 'absolutely humbling' and hopes it will help her to impart her empowering message.
Kaur has polycystic ovary syndrome, a hormonal condition that can result in the growth of excess facial hair.
She describes herself on social media as "Bearded Dame, Body confidence activist, Anti Bully Activist, Plus Size Model" and dresses in a Sikh turban.
"I can now proudly announce that I am a 'Guinness World Record' book holder. I have been wanting to publish this news for absolutely ages, but I had to keep things under wrap until the book launched," she said in a social media post.
She said, "I hope those who read or see my record can take away positivity, inspiration and realise that no matter who you are or what you look like, you are officially amazing!"
Kaur, who was bullied as a child, has gone on to model forUrban Bridesmaid Photography and made her debut on the catwalk by opening the Marianna Harutunian Royal Fashion Day show in March, wearing her traditional Sikh turban, a navy dress and black heels.
"The 2017 edition teems with fun and educational content that will fascinate, entertain and educate knowledge-seekers of all ages and interests," 'Guinness World Records' said in a statement.
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