Gwen Stefani Makes a Surprise Appearance at Blake Shelton's Los Angeles Show, Parties Backstage

Gwen Stefani and Blake Shelton Adorably Duet at Concert in LA: W…

Inside the Kardashians' Night Out at Beyoncé's Concert: Fashion,…

Prince Harry and Meghan Markle Show Off PDA and Dance at Beyoncé…

Kylie Jenner and Timothée Chalamet Make First Public Appearance …

'The Morning Show': Watch First Look at Reese Witherspoon and Je…

‘Mean Girls’: Biggest Behind-the-Scenes Secrets

‘The Blind Side’ Producers Speak Out Amid Michael Oher and Tuohy…

Jessica Simpson's Daughter Crashes Her Interview as She Shuts Do…

Watch Zendaya Support Boyfriend Tom Holland During Basketball Ga…

Watch Tia Mowry and Gabrielle Union Show Off Their Dance Moves o…

Alexandra Paul, Canadian Olympic Figure Skater, Dead at 31

’90 Day Fiancé’: David Hides His Nerves From Sheila as He Prepar…

'Claim to Fame' Winner Gabriel on Brother Nick Cannon's Reaction…

Kathy Griffin Documents Getting Lips Tattooed and Shares the Sho…

’90 Day Fiancé’: Sex Therapist Helps Michael and Angela Be More …

'Bottoms': Ayo Edebiri and Rachel Sennott on Playing Teens in R-…

Prince Harry and Meghan Markle Set to Attend the Invictus Games …

Nick Carter Reflects on Loss of Brother Aaron as He Returns to S…

Cardi B and Megan Thee Stallion Flaunt Their 'Bongos' in Colorfu…
Gwen Stefani is back on stage with her boo!
The 47-year-old singer attended boyfriend Blake Shelton's Doing It to Country Songs Tour stop at The Forum in Los Angeles on Friday, and surprised fans by joining him for an adorable rendition of their duet, "Go Ahead and Break My Heart."
WATCH: Gwen Stefani Reveals Valentine's Day Present From Blake Shelton
Stefani went full-on glam for the show, donning a black turtleneck top, shiny patterned mini skirt and thigh-high boots, keeping her platinum blond tresses pulled back into a messy top knot. The 40-year-old country crooner was rocking a much more casual look, sporting comfy blue jeans and a gray button-down shirt.
Naturally, the No Doubt frontwoman took to Snapchat to share some behind-the-scenes pics and videos, snapped backstage at the iconic venue. Judging by the photos, which included "A cake for Blake," stamps with the couple's faces and red solo cups laid out to form the letter "B," it appears the backstage party was a blast!

WATCH: Gwen Stefani Shares Steamy Valentine's Day Kiss With Blake Shelton
Although Shelton isn't an avid Instagram user -- his page only has six pics! -- he couldn't help himself from sharing a sweet photo of himself chatting with an elderly fan after the show.
"Hope I'm still showin up to country shows at 96!!" he captioned it.
Earlier this week, Stefani was a guest on The Tonight Show Starring Jimmy Fallon, where she joked about some of her and Shelton's differences.
"I think he's quite miserable when he's not in the woods or, like, somewhere in camo," she said of Shelton not being a city guy. "He really likes to be camouflaged."
"I know that for me I just go anywhere, and I know I'm gonna get hounded for pictures or whatever," she continued. "I don't mind, you know what I mean? For him, he's just not used to that, like I said. He's in the woods most of the time but, yeah, we went [to Disneyland recently]. It was crazy. It was, like, a billion people there."
Hear more in the video below!