As the girls put on a show-stopper of a performance in Bournemouth, little did they know that Una Foden's husband Ben, Rochelle Humes' husband Marvin and Frankie Bridge's husband Wayne were waiting in the wings for them backstage to get the after-party started.
But, who do the girls have to thank for their lovely surprise?
Sharing a picture of herself and her rugby pro husband, Una said: "Aw @ben_foden thanks for our surprise tonight x" along with an emoji of a face blowing a kiss - sounds like Ben was the mastermind behind taking The Sats' hubbies on tour!
Earlier this month, Una - who is already mum to Aoife-Belle, two - announced she was pregnant with her and Ben's second child, so it's no wonder Ben paid a visit to check mum and bump were doing ok!
Like Una, both Rochelle and Frankie were very happy to see their other halves.
Rochelle, who has been keeping her husband close to hand while away on tour - Roch has an adorable picture of Marvin and their daughter Alaia-Mai as her phone cover!, shared a photo of herself and Marvin together yesterday evening.
Sporting a huge grin on her face, Roch was clearly pleased to finally have the real-life Marv in front of her!
Meanwhile, Frankie and Wayne proved that great minds really do think alike as reunited last night, the couple were wearing matching outfits - both sporting black jeans, a white top and black jackets.
Sharing a photo of herself and her husband, Frankie wrote: "Oops!", along with an emoji of a monkey covering its eyes.
Oh, you guys!
For the last couple of weeks, The Saturdays have been partying up a storm while touring up and down the country on their 12 date tour.
Now with one more stage left to perform on, The Sats are off to Plymouth for their final show tonight.
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