The newly single star, 31, cheered on friend Shania Twain during the "That Don't Impress Me Much" singer's Saturday Rock This Country tour stop in Nashville, Tennessee.
"Girls night, love seeing you," wrote Twain, sharing a photo with Lambert on Instagram.
Lambert couldn't hide her affection for the music icon, posting a photo of Twain, 49, riding on a crane over the audience mid-performance.
"Shania Twain. Fringe Saddle. That's All," wrote Lambert of the Instagram pic, adding hashtags "#nashville #girlsnight #rockthiscountry #badass #musicismedicine."
Blake Shelton and Miranda Lambert: Inside Their Shocking Split
Lambert has been enjoying time with her girlfriends in the weeks since announcing her split from husband Blake Shelton after four years of marriage.
Earlier in the week, Lambert and her friends were spotted at Cantina Laredo in Nashville's Gulch neighborhood.
"She looked so great," fellow diner Paige Filmeck told PEOPLE. "Miranda was so sweet. She was just enjoying time with her girlfriends."
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