Blake Shelton's LA Concert Turns into Date Night with Gwen Stefani and Her Sons

Blake Shelton had special visitors at his Los Angeles concert over the weekend when his girlfriend Gwen Stefani and her two sons joined him in support, followed by a surprise performance.

The 43-year-old singer performed at The Forum on Saturday as a part of his Friends and Heroes Tour, and Gwen with her boys, 11-year-old Zuma and 13-year-old Kingston, had a great time as they joined him at the concert.

Gwen shared the fun evening with her fans by posting a picture of her and Blake with her sons as they smiled broadly for the camera, but the night also had a surprise in store for Blake's fans.

When Blake started performing "Nobody But You," Gwen joined him on stage for their duet much to the roaring delight of the audience. But she made sure to thank him afterward for a concession he made, as Gwen wrote:

“@blakeshelton thank u for having me on your @theforum stage and giving me the opportunity to wear denim and diamond Fringe with a unicorn ponytail ?."

The custom Daniel Diamond jacket with its fringe detailing looked stunning on Gwen, and she had Blake's name embroidered on its back while finishing off her look with long sparkling boots.

Gwen's youngest son, Apollo, didn't join the rest of the blended family at Blake's concert, but he got some special family time when celebrating his sixth birthday recently.

Late last month, Gwen celebrated her son's birthday with a sweet tribute to social media as she showed off his birthday cake in a happy snap taken with Apollo as he sat on Blake's lap.

Alongside a picture of the Oreo-topped cake and smiling faces, the 50-year-old singer posted a loving message to her son that read:

"6 years ago GOD blessed us w this little angel ? boy ??."

In the four years the couple has been together, Blake became a big part of Gwen's children's lives.

While the country singer remains mindful that Gwen's ex Gavin Rossdale is their father, the boys reportedly spend a lot of time with Blake and have plenty of "fun" on his Tishomingo, Oklahoma ranch.

Earlier in February, Gwen Stefani had to cancel four of her residency shows in Las Vegas after she went from feeling "under the weather" to full out exhaustion.

Gwen's high-intensity shows and the demands of being a mom to three active sons caught up with her, and she ended up canceling another three shows before recuperating enough to return to the stage.