50 Shades of Grey - Laters, Baby! Handcuffs Girl's T-Shirt. 50 Shades of Grey is a #1 Best Selling novel written by E L James. This hot and steamy book has been dropping jaws since being released for purchase. This shirt is perfect for any Shades fan. Later's Baby was what Christian Grey would say to Ana. This print is a beautiful metallic grey and looks great in person! You'll absolutely love this shirt. Laters, Baby!