Popsugar Fashion Halloween Costumes 2019 Neil Patrick Harris and David Burtka Dressed as Olsen Twins Neil Patrick Harris and David Burtka Went All-In on Their Olsen Twins Halloween Costumes 2 November 2019 by Karenna Meredith Image Source: Getty / Noam Galai Neil Patrick Harris and David Burtka are known for being ultra-committed to their Halloween costumes every year, and 2019 is certainly no exception. Shortly after they unveiled an artistic family costume with their 9-year-old kids — Harper and Gideon — the Hollywood couple channelled another set of twins at Heidi Klum's annual Halloween bash: Mary-Kate and Ashley Olsen. Neil and David slipped into blonde wigs and all-black outfits, with cheekbones chiseled by lots of contouring. The stylish sisters are frequently seen in similarly monochromatic looks, and we have to say, Neil and David really nailed their red carpet poses. The subtle smiles and smouldering are all too familiar. Keep reading for a look-back at some of Mary-Kate and Ashley's most iconic all-black ensembles from the past few years, and then check out more snaps from Neil and David's Halloween night. Related: 25 Stylish Celebrity Halloween Costumes We'll Be Thinking About All Week Mary-Kate and Ashley Olsen Wearing All-Black Image Source: Getty / Jamie McCarthy 1 / 10 Mary-Kate and Ashley Olsen Wearing All-Black Image Source: Getty / Mike Coppola/MG19 2 / 10 Mary-Kate and Ashley Olsen Wearing All-Black Image Source: Getty / Dimitrios Kambouris 3 / 10 Mary-Kate and Ashley Olsen Wearing All-Black Image Source: Getty / Taylor Hill 4 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Noam Galai 5 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Noam Galai 6 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Noam Galai 7 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Taylor Hill 8 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Gotham 9 / 10 Neil Patrick Harris and David Burtka Dressed As Mary-Kate and Ashley For Halloween Image Source: Getty / Taylor Hill 10 / 10 Halloween Costumes 2019Celebrity Halloween CostumesDavid BurtkaHalloween CostumesNeil Patrick HarrisMary Kate OlsenAshley Olsen