51 Halloween Costumes You & Your BFF Will Completely Slay by Lex Gabrielle 20. Quarter & a gumball machine: Happy Halloween! ???? #gumballmachine #quarter #halloween #bff #bffcostume #costume #groupcostume #weredating #iloveher #rideordie #bestfriend #staugustine #Meehans #kduff #gumballmachinecostume A post shared by Jaime Greco ? (@jaimegreco) on Nov 1, 2014 at 12:11am PDT 21. Blair & Serena from Gossip Girl: Spotted in the North Loop: Blair Waldorf and Serena van der Woodsen. XOXO. Gossip Girl? #gossipgirl #xoxo #blairwaldorf #serenavanderwoodsen #bff #nyc #uppereastside #halloween #ootd A post shared by Mollie Horton (@molliehorton) on Nov 1, 2015 at 7:50am PST 22. Cher & Amber from Clueless: Just in case you missed @jackiegiardina and I's 90's inspired costumes, here's another #bff #costumeidea to try with pieces you already have in your closet. #halloween #costumes #halloweencostumes #90s #clueless #asif #stripes #wiw #ootd #style #bffcostumes #gingercostumes #redheadcostumes A post shared by Megan Zietz (@meganzietz) on Oct 10, 2016 at 6:51am PDT 23. Salt & Pepper: Salt n pepper is herrreeeeee!!!!!!! @kellyblinson ?? #bffcostumes #halloween A post shared by Rachel Pepper (@peppashaka) on Oct 31, 2015 at 3:39pm PDT 24. Bambi & Thumper from Bambi: 25. Jaq & Gus from Cinderella: Page 5 of 10Previous 12345678910Next