Anne Hathaway had a surprise in store for fans as she took to Instagram in celebration of Mother's Day.The Oscar winner – who shares two children with husband Adam Shulman – posted the sweetest snapshot showing her with her own beloved mother, Kate.MORE: Anne Hathaway reveals what her friends and family really call her WATCH: Anne Hathaway shares a glimpse inside her family homeThe black-and-white selfie shows the pair smiling and posing together in paper crowns.