Neil Patrick Harris and David Burtka‘s twin children Harper Grace & Gideon Scott celebrated their sixth birthday on Wednesday (Oct. 13).
The How I Met Your Mother actor took to his Instagram to share a sweet two-picture shot of the brother-sister duo partaking in fun activities.
“Gideon and Harper turn 6 today! Happy birthday to these big, bold, brave, bright, beautiful bundles of bountiful blessings. Boom. #balliteration @dbelicious and I love you kids SO much! #grateful,” he captioned the shot.
Burtka also took to Instagram a day later to gush about their twins.
Harris and Burtka married in Italy in September 2014. They welcomed their twins in October 2010 via a surrogate mother.