Popsugar Fashion Best Friends Blair and Serena's Coordinated Outfits on Gossip Girl All the Times Blair and Serena's Coordinated Outfits Made Them TV's Most Stylish BFFs 21 May 2020 by Nikita Charuza View On One Page Photo 4 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Pleated Skirts and Long Socks No one rocks matching school uniforms and long socks better than Serena and Blair. Previous Next Start Slideshow Best FriendsScreen StyleNostalgiaGossip GirlLeighton MeesterBlake Lively