In 2009 she founded Cornelia Guest Events and Cornelia Guest Cookies, catering high-end charity and entertainment events with healthy, vegan dishes. Her mission is to encourage and inspire people to be conscious of the diet choices they make in their daily lives.
Cornelia is currently designing her own line of jewelry, as well as a collection of animal-friendly handbags, wallets and dog accessories made with a vegan alternative to leather; both lines are scheduled to launch in the fall of 2011.
Daughter of American fashion icon CZ Guest and polo champion Winston Frederick Churchill Guest, Cornelia has been able to use her media attention and professional contacts to support Humane Society of New York, and was named by Donna Karan as one of the Women Who Inspire. Cornelia is also an advocate for New Yorkers for Marriage Equality and hosted their fall 2010 event with Mayor Bloomberg.