WHCInsider co-founder Tammy Haddad spoke with Barbara Pierce Bush and Jenna Hager Bush about their new book "Sisters First" at a release party hosted by Connie Milstein, Dr. Mark Dybul and Anita McBride at The Jefferson Hotel.

While they admitted they know, the twins remained mum about the joke their father, President George W. Bush whispered to President Barack Obama at the Hurricane relief event held in Houston, TX earlier this month. Sounds like they also put family first! #SistersFirst