Celebrate Father's Day with this Official Ladybird Books For Grown-UpsÂ Father's Day Grandad card. The greetings card range is basedÂ on the hilarious Ladybird Books for Grown-Ups Range which has sold over 2 million copies since launching last year and continues to dominate the UK book charts! The front of this OfficialÂ Ladybird Books For Grown-UpsÂ Happy Father's Day Grandad On Father's Day card says "Have A Great Day!" andÂ inside the cardÂ reads "HAVE a great day!" The inside cover has a few hilarious extracts about being a grandad.Â This card comes with an unsealed envelope included.Â There is also plenty of space to write your own personal message.