The 26-year-old actor and musician has a six-month stint in the musical where he be playing the role of Joe, the soccer coach.
Lily has been documenting her trip to London to attend the premiere on her Instagram, posting cute snaps with Jamie as they travel around the city.
“Let the bending begin!! Its about to get wild!! Couldn’t be prouder #openingnight #benditlikebeckham…,” the starlet captioned the photo.
Jamie also took to his Twitter to share a photo of the couple at the premiere saying, “A special night made 10 x more so by having this lovely by my side.”