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' gig at the Staples Center, while Lupita (centre) teased her short hair into a chic centre-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 enormo' bunches, ready for a performance at G.A.Y. See? This hair-twosies thing is one party that everyone's invited to. 

Check out how to upgrade your side ponytail for spring with this easy-as how-to video.