The 46-year-old late-night talk show host commemorated the milestone moment on Instagram Wednesday, sharing a snap of him and his two daughters, Winnie, 7, and Frances, 6, whom he shares with wife, Nancy Juvonen.
In the shot, the trio are crawling on the floor of their home, where Fallon now hosts the show, surrounded by tons of colorful, celebratory balloons.
"A lot can happen in 7 years. Thank you for having me in your living rooms and phones. Celebrating the anniversary of @Fallontonight with my favorite co-hosts! 🎉" Fallon wrote.