The Tonight Show Starring Jimmy Fallon Instagrammed THIS VIDEO from Reese Witherspoon's appearance on the show.
Buy Reese's exact outfit here:
Reese's dress is the Alexander McQueen Off-Shoulder Knitted Dress. Buy it here: BERGDORF GOODMAN, FARFETCH, MYTHERESA, NORDSTROM, and SAKS FIFTH AVENUE
Her belt is the Alexander McQueen Military Belt. Buy it here: ALEXANDER MCQUEEN
Get the look for less here: