Popsugar Celebrity Luke Hemmings Luke Hemmings and Sierra Deaton's Cutest Pictures We're Totally Melting Over Luke Hemmings and Sierra Deaton's Sweetest Pictures 12 December 2019 by Carley Farrill Image Source: Getty / Bennett Raglin Let's face it, at one time or another we've probably fallen into the hole of scrolling through celebrity Instagram accounts. Luke Hemmings' Instagram account was already the perfect subject for my mindless Instagram scrolling, but once he and Sierra Deaton got together, the content got even better. 5 Seconds of Summer's Luke made things Instagram official with dancer and singer Sierra (whom you probably saw on the final season of The X Factor) in August 2018 and are so cute together that we just keep saying "aww" over and over. Let's check out some of their cutest pictures as we impatiently wait for more. Image Source: Getty / Stefanie Keenan 1 / 10 Image Source: Getty / Taylor Hill 2 / 10 View this post on Instagram A post shared by Luke Hemmings (@lukehemmings) on Feb 11, 2019 at 11:15am PST 3 / 10 View this post on Instagram A post shared by Luke Hemmings (@lukehemmings) on Dec 26, 2018 at 9:27pm PST 4 / 10 Image Source: Getty / Bennett Raglin 5 / 10 View this post on Instagram A post shared by sierra deaton (@sierradeaton) on Jul 15, 2018 at 5:02pm PDT 6 / 10 View this post on Instagram A post shared by Luke Hemmings (@lukehemmings) on Aug 19, 2018 at 5:40am PDT 7 / 10 Image Source: Getty / Gilbert Carrasquillo 8 / 10 View this post on Instagram A post shared by sierra deaton (@sierradeaton) on Jul 15, 2019 at 10:44pm PDT 9 / 10 Image Source: Getty / Gilbert Carrasquillo 10 / 10 Luke HemmingsCelebrity InstagramsCelebrity Couples