Keith Urban and Nicole Kidman celebrated 11 years of marriage together on Sunday with a series of selfies posted to Instagram.

"Happy Anniversary Babygirl," Urban, 49, captioned the photos. "Eleven years and you still feel like my girlfriend!!!"

The couple tied the knot in Sydney, Australia, in 2006. They share two daughters, Sunday Rose, 8, and Faith Margaret, 6, together.

But as Breaking Celebrity News recently reported, there have been plenty of roadblocks for the pair in the last several months — which almost put their marriage to a bitter end!