From double buns (think Gwen Stefani and Björk in the '90s) to girlie pigtails, Kendall Jenner, Lupita Nyong'o and Foxes all rocked hair twosies over the weekend, proving that doing a double on your head can work just as well for dressed-up days as it can for downtime. In LA, Kendall (left) went for a classic messy double bun for Miley Cyrus' Bangerz tour at the Staples Center, while Lupita (center) teased her short hair into a chic center-parted style to collect the award for Outstanding Supporting Actress at the NAACP awards. Back in London, Foxes (right) maxed out her locks by crimping and backcombing hers into to enormous bunches, ready for a performance at club G.A.Y. See? This hair twosies thing is one party that everyone's invited to.