The 'Broken Heels' singer made the brave choice of ditching her fail-safe skinnies for the new denim trend as she grabbed a bite to eat at La Petite Maison in Mayfair.
We've already seen TOWIE's Jasmin Walia sporting an acid wash pair, but Alexandra opted for pale blue trews with heaps of rips and rolled-up ankles.
She teamed her high-waisted numbers with a simple white tee plus a black skinny belt to help define her waist.
To add a touch of luxe to her look, the X Factor winner toted a turquoise Chanel quilted handbag and a smart boucle jacket.
And the key to making mom jeans look good is by wearing heels, so Alexandra opted for simple yet chic patent round-toe pumps
The starlet also rocked a boyfriend watch and a chain necklace, leaving her tousled locks down while flaunting flawless make-up.
So, want to steal her style? Head to Topshop for mom jeans in oodles of colours, or snap up this jet black pair for £22.99 from New Look.
Tuck in your tee like Alexandra, or amp up the 90s vibe by teaming with a bright crop top.
Add courts, a leather belt (and maybe even a hair scrunchie à la Rita Ora) and you're good to go!
What do you think of Alexandra's outfit? Let us know by commenting below as the best comment across the site each week wins £50!
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