The name Ernestine is a girl's name . Ernestine and is often added to lists like Names No Girl May Be Cool Enough For and discussed in our forums with posts like "What would be the perfect twin?".
From the experts:
One time joke name, à la Lily Tomlin's bossy telephone operator, Ernestine is ready for a possible reevaluation, like cousins Josephine and Clementine..