About
“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
Meet the Founder
As a certified etiquette trainer, Mariah Grumet Humbert’s mission is to bring an intentional sparkle back to a lost art. She redefines the meaning of etiquette with a modern, approachable, and vibrant twist on the topic to help her clients build confidence, create stronger connections, distinguish themselves, and reach their full potential in their personal and professional lives. Old Soul Etiquette was founded in 2021 when Mariah left a career in fashion to follow her greatest dream: to empower and impact through her passion for modern etiquette.
Mariah is honored to work with individuals of all ages and backgrounds located across the globe. Old Soul Etiquette's services include both in-person and virtual private consulting, interactive group workshops, webinars, speaking engagements, and special events on the following topics: youth, social, dining and business etiquette, personal branding, wedding preparation, style consulting, and more. OSE’s clients span across industries such as high jewelry, finance, education, real estate, talent management, utility, hospitality, entertainment, and more. Mariah is based in New York City, and is available to travel by request.
Mariah is also the author of modern wedding etiquette book "What Do I Do?” Her expertise has been sought after by The Today Show, NBC News, Fox News, Forbes, Southern Living, The New York Post, Travel & Leisure, Brides, Martha Stewart, and more.
Some of Mariah’s favorite things include her family, a hot cup of tea, I Love Lucy, long walks, vintage fashion, a big bowl of pasta, The Marvelous Mrs. Maisel, any Frank Sinatra song, Paris, antique shopping, and of course, New York City.
Certifications & More
Graduate of The English Manner and Beaumont Etiquette’s Train the Trainer Grade One Program
Certified in Corporate and Youth Etiquette Training through The Protocol School of Palm Beach
Member of The International Etiquette Trainer Society led by The Protocol School of Southern California
Bachelors Degree in Fashion Merchandising through The University of Delaware Department of Fashion and Apparel Studies
