Former Spice Girls star Mel B has been treading the boards on the Great White Way, playing Roxie Hart in the current Broadway revival of “Chicago”.

Theatregoers at Sunday’s performance — which will mark the final show in her run — were in for a nostalgic surprise when the singer/”America’s Got Talent” judge, 41, broke character to share a bit of a Spice Girls classic, adding a lyric from the band’s iconic hit “Wannabe” to the delight of the whooping, hollering audience.

RELATED: Mel B Talks Possible Spice Girls Reunion: ‘We’re Not B***hes Anymore’

“Here is a snippet of me last night doing my last show In @chicagomusical playing Roxie heart [sic] breaking character busting out some spice power,” she wrote in the caption accompanying this video, which she posted on Instagram on Monday.

Mel B (a.k.a. Melanie Brown) signed on for an eight-week run on the show, which ended on Sunday, Feb. 19, and she commemorated her final show with a tweet, pointing out that she didn’t miss a single performance

She did, however, suffer a case of the giggles onstage, and jokingly blamed co-star Amra-Faye Wright:

View this post on Instagram

Giggle fit,you made me do it @amrafaye

A post shared by Scary Spice Mel b (@officialmelb) on

To mark the end of her Broadway run, Brown’s husband, Stephen Belafonte, sent his wife a congratulatory note on Instagram.

“Congratulations to my super sexy multi-talented wife @officialmelb For playing the lead in Chicago on Broadway!! All good things come to an end and now I get my baby back!!!” he wrote.

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