The actress captioned the pictures with an array of hashtags, all of which showed how proud she is over her former husband's accomplishment. #showingthegirls #tofinsihistowin #proud #proudofdad and #congratulations are just a few of the sweet sentiments she shared.
While the two finalisted their divorce in August, Barrymore and Kopelman are still on good terms.
Earlier this month the actress told E! opened up about their current bond after they separated. "Will's family is my family, and my daughters are my family. I never thought I'd be so lucky to have so many families!" she told the site.