Lauren, 29, was pictured arriving at WAG! The Musical in London's West End while rocking a seriously on-trend monochrome outfit from Oasis.
The star worked her floral print Indian Summer Trousers, £40, with the coordinating jacket, £70, and wore a simple white camisole underneath.
Lauren teamed her getup with a white pair of pointed heels and carried a black clutch bag, topping off her monochrome look perfectly.
Styling her hair with a clip-in bun from her own range, Hair Rehab, Lauren looked seriously chic as she posed for the cameras before heading inside to watch the show.
Earlier, she had tweeted: "What a manic day, work, meetings, gym, now relax time...on my way to meet the gang for a night at the theatre and maybe a few vinos."
For someone who had clearly been rushed off her feet, Lauren looked cool, calm and collected!
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