The couple were among the stars who checked out the brand new Hogwarts Express and Platform 9¾ at the Warner Bros. Studio Tour London.
As well as taking a look at the steam train that takes students to Hogwarts School of Witchcraft and Wizardry, the couple indulged in a couple of butterbeers, the magic world's drink of choice.
Lucy shared an image of them enjoying their beverages together, telling Instagram followers that Louis was a massive Harry Potter fan!
And judging from his scarf, he wants to be in Gryffindor with Harry, Ron and Hermione!
Before the event, Olympic gymnast Louis had tweeted: "Going to harry potter world tonight to catch the Hogwarts express train at platform 9 - 3/4, I'm debating dressing up like a wizard!!"
Louis later added: "What an amazing evening at the @wbtourlondon for the opening of #hogwartsexpress I was like a kid in a candy store."
The new Platform 9¾ is open to the public from tomorrow and is included in the ticket price. (And don't worry, you don't need to run against a brick wall to get in...)
What has Lucy Meck been up to since TOWIE?
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