Kelly Clarkson and Brandon Blackstock celebrated their third wedding anniversary on Thursday.

The 34-year-old singer marked the occasion by posting a sweet message to Blackstock on Twitter.

"We got that young love.... Happy anniversary @BBlackstock We remembered this year," she captioned a photo of a tree engraved with "B + K = Love."

Clarkson and Blackstock married in Walland, Tenn., in 2013 after a year and a half of dating.

They share two children, 2-year-old daughter River and 10-month-old son Remy, but don't plan to expand their family further.

"We are not having any more kids," Clarkson told "Entertainment Tonight" last week.

"I mean, there's no time for more kids, yeah. Just, like, fitting everything in is hard enough, and I hate pregnancy. Like, with a capital H."

"I was mid-pregnancy with Remy and I made my husband [get a vasectomy]," the star confirmed. "I didn't have to force him. He was running to the doctor. We both were like, 'Nope!'"

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Clarkson had revealed on "The Jenny McCarthy Show" the week previous that Blackstock had a vasectomy. The star had nothing but praise for her husband when she spoke to "On Air with Ryan Seacrest" in March.

"Brandon is such a great father. Watching my husband love on his daughter all the time, go to her events and just be there and be present is hard to watch, but beautiful to watch," she said at the time.

Clarkson came to fame after winning the first season of "American Idol" in 2002. She last released the album "Piece by Piece" in February 2015.