Mariah Grumet

Oct 16 2024

by Katelyn Whelan

As a certified etiquette trainer, Mariah’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?” and “The Essential Wedding Planner” (coming June 2025). 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.

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Katelyn Whelan View More Blog Posts from this Author

Katelyn is a graduate of the University of Notre Dame, where she earned a dual degree in Marketing & Visual Communication Design. Settling in her hometown of Savannah, GA, she has spent the past 5 years building a career working with female owned small businesses. From events to retail, she has learned the art of translating ideas into action. Specializing in digital marketing, she seeks to bring the passion of her clients to life through the power of social media & e-commerce. She is the digital arm of a design firm founded with her two sisters, The Whelan Girls.

When she is not working, you can find her at the beach. She loves spending time with her family and can whip up a killer batch of chocolate chip cookies.

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