Kelly Clarkson delighted fans by capturing a sweet moment between her daughter and stepson this week.
"Nothing more adorable than a big brother reading to his little sister #Seth&River," she captioned the picture for her 2.3 million followers.
Clarkson shares River and 13-month-old son Remy with husband Brandon Blackstock, whom she married in 2013.
Blackstock is dad to Seth and daughter Savannah with his ex-wife, Melissa Ashworth.
"We have a blended family. That's another level of trying to make it work and everyone feeling as equally as loved an important, and then also just having a marriage and having a career," Clarkson told "Entertainment Tonight" in December."I am more confident now because of all these things my life entails."
"I have never been more confident as a woman as I am as a mother. The amount of stuff I get done in a day is insane," she said. "I feel like I'm nailing it."
She made Blackstock get a vasectomy after she had another difficult pregnancy with Remy.
"It something happens, it's a miracle of God," the star joked.
Clarkson came to fame after winning the first season of "American Idol" in 2002 and is scheduled to serve as a coach on Season 14 of NBC' "The Voice" in early 2018.
She last released the album Piece by Piece in 2015, which includes the singles "Heartbeat Song" and "Invincible."