This great World Penguin Day piece comes from London-based artist Ruby Elliot of Rubyetc. You can purchase her work on her Society6 page and follow her on Twitter, Tumblr, Facebook and Instagram. She's also published a book called It's All Absolutely Fine, and a few more of her illustrations are below:
https://www.instagram.com/p/BTJMqq2Apb4/?hl=en https://www.instagram.com/p/BS0tyMQAXTH/ https://www.instagram.com/p/BRvL6ZFgqrE/ https://www.instagram.com/p/BNZTbzrDYJN/?hl=en