Lucy Mecklenburgh praised her boyfriend Louis Smith for being her "beaut man" after treating him to a tour of the Harry Potter studios last night (17.03.15).

Lucy Mecklenburgh and Louis Smith at the launch of the new Hogwarts Express train and Platform 9 3/4 at Warner Bros. Studio Tour London - The Making o

Lucy Mecklenburgh and Louis Smith at the launch of the new Hogwarts Express train and Platform 9 3/4 at Warner Bros. Studio Tour London - The Making o

The former 'The Only Way is Essex' star joked the Olympian is the "biggest Harry Potter fan ever" after taking him to the launch of the new Hogwarts Express train and Platform 9 3/4 at Warner Bros. Studio Tour London - The Making of Harry Potter in Leavesden, south east England.

Lucy took to her Instagram account to share a number of snaps of her and Louis in front of the "impressive" new red and black locomotive and the pair also got into the 'Harry Potter' spirit by enjoying some Butterbeer, a non-alcoholic butterscotch-tasting beverage which was drank by several characters in the film franchise.

In a series of posts, she wrote: "Me & the biggest Harry Potter fan ever at the launch of platform 9 & 3/4 & the amazing #hogwartsexpress

"Me & the impressive #hogwartsexpress#harrypotterstudios .. Wearing a beautiful red@halstonette dress

"At Harry Potter Studios drinking Butter Beer!! With@louissmith1989 no1 fan! #harrypotter#hogwartsexpress (sic)"

The couple's date obviously went well as she took to Twitter this morning to heap praise on the hunk during his appearance on ITV's 'Lorraine'.

Posting a picture of the star on the show, Lucy wrote: "My Beaut man on @ITVLorraine (sic)"

Lucy and Louis were not the only stars who turned out for the new Hogwarts Express launch, they were joined by the likes of 'Celebrity Big Brother' presenter Emma Willis and singer Conor Maynard as well as former Pussycat Dolls beauty Kimberly Wyatt, who took her three-month-old baby Willow to the event.