Prince William and Kate Middleton shared a sweet new photo of their 6-year-old daughter, Princess Charlotte, on Sunday in honour of an important cause.

The royal couple shared the adorable image on Instagram, in which Charlotte could be seen gently holding a butterfly in her hands while spending time outdoors.

The casual snap was captioned as, “We wanted to share these beautiful Peacock and Red Admiral butterflies as part of Big #ButterflyCount initiative taking place across the UK.”