MARIAH G. HUMBERT
MARIAH G. HUMBERT
Etiquette expert and author
Mariah G. Humbert is a New York City–based etiquette expert and author leading a new era of modern etiquette. Her philosophy is that etiquette is far more than a set of rules — it’s a powerful set of tools that empower individuals to shine with confidence, form meaningful connections, and stand out with authenticity.
After leaving the corporate fashion world in 2021, Mariah built a business dedicated to helping individuals and organizations present themselves with clarity, polish, and presence. Through bespoke consultations, trainings, and keynote speaking, she helps clients navigate everything from high-stakes professional scenarios to meaningful social moments with ease, emotional intelligence, and intention. Her clients span industries including high jewelry, finance, real estate, hospitality, entertainment, technology, and education.
ABOUT MARIAH
Mariah is a member of The International Etiquette Trainer Society and The International Association of Professional Image Consultants, and serves as the VP of Personal Branding for The Influential Leadership Agency. She is the author of the modern wedding etiquette books What Do I Do? and The Essential Wedding Planner, and her expertise has been trusted by The Today Show, NBC News, Fox News, Forbes, Southern Living, The New York Post, Travel + Leisure, Brides, Martha Stewart, and more.
Some of her favorite things include her family, a hot latte in the morning, I Love Lucy, long walks, vintage fashion, a good beach read, a big bowl of pasta, The Marvelous Mrs. Maisel, playing tennis, any Frank Sinatra song, and of course, New York City.
Certifications
“A master at blending timeless grace with today's fast-paced world, Mariah is on a mission to help us all standout, live intentionally, and exude confidence in every interaction.”
FRANCES VALENTINE
FEATURED IN
For individuals, Mariah provides 1:1 personal development coaching, virtually or in New York City, covering dining, social, and business etiquette, personal branding, communication, media training, interview preparation, and special event readiness. For businesses and corporations, she leads group workshops and provides consulting in professional presence, workplace communication, client etiquette, business dining, hospitality training, executive presence, onboarding, and company-wide conduct. She also deliver keynotes, panels, and special event speaking engagements, bringing practical guidance and inspiration to every audience.
Mariah offers a range of services designed to help individuals and organizations show up with confidence and polish.
Work With Mariah
Formerly known as
OLD SOUL ETIQUETTE
RECENT PRESS
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NBC NIGHTLY NEWS
NBC News' Tom Llamas talks to "The Points Guy" Managing Editor Clint Henderson and etiquette expert Mariah Grumet Humbert about their thoughts on airport wardrobe.
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THE NEW YORKER
Mariah Grumet, an etiquette coach, and Kate McKinnon, the “S.N.L.” alum and actress sit down together and discuss making etiquette really modern and approachable.
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INSIDE EDITION
Some brides-to-be are in a state of panic. Their wedding date coincides with the presidential election and they're worried heated arguments might break out among their guests.
THE TODAY SHOW
Hoda Kotb and Jenna Bush Hager visit Tiffany’s for a meal and get a lesson on afternoon tea etiquette from Mariah G. Humbert.
SUBSTACK
From life in New York City to the behind the scenes realities of building a brand with grit and heart, Mariah offers honest lessons, practical guidance, and thoughtful musings to help you elevate both your presence and your potential.