Kelly Clarkson Thanks Estranged Husband for "Believing" in Her Following Daytime Emmy Win

Additionally, Kelly also requested joint legal and physical custody of her and Brandon’s two children: River Rose (6) and Remington Alexander (4).

The two have yet to publicly addressed their split. However, sources close to the pair previously told E! News that their divorce has come as a complete shock.

“It came out of nowhere,” an insider shared. “It’s all so sad for the kids. They were always such a loving family. It never seemed like they had any issues.”

A second source, close to Kelly’s daytime talk show, had the same sentiments. “Brandon was around all the time on almost all show days and they were very loving towards one another. They drove home from set together every night,” the insider said.

The two got engaged in 2012, and tied the knot a year later in Tennessee. Kelly’s tweet on Friday is one of the first times she’s mentioned her estranged husband since the divorce filing.