Gilligan Stillwater is the wife of Billy Gibbons, the lead singer and guitarist of the rock band ZZ Top. She is also the band manager and has supported her husband’s music and business ventures for over two decades. She is a car enthusiast and a hippie who loves nature and animals. In this blog post, we will explore her age, bio, career, and net worth in detail. Who Is Gilligan Stillwater? Gilligan Stillwater was born Allen J. Oetjen on March 8, 1965, in the United States of America. Her zodiac sign is Pisces. She has not revealed much about her…