'Skyscraper' singer Sam attended the premiere at the Odeon Leicester Square with her husband Craig Pearson and their children Brooke and Tommy, but they were without baby daughter Miley.
Sam, who rose to victory on the ITV talent show in 2013, wore leather-look black trousers with a sleeveless canary yellow top and matching heels.
Her family also embraced the theme of the children's movie, making a very bright red carpet entrance!
Sam, who beamed from ear-to-ear as she posed for photos, has been keeping fans up to date on her new weight loss journey.
In her Exante Diet blog yesterday, she said: "I've loved being back on stage doing what I enjoy the most, getting my groove on! I can't tell you how much more energy I feel when performing now I've sorted out a healthier living routine.
"I even managed to squeeze back into my old jeans today!! I mean… I almost gave them away the other month when I tried them on and couldn't even get them past my thighs!"
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