First son Max Key has celebrated his landmark birthday with a superheros and villains-themed party at the Prime Minister's Parnell mansion last night.
A relaxed-looking Key, dressed at Batman, posed for photos with fellow good guy Superman and villains such as The Joker in photos of his 21st birthday bash posted on Instagram.
Among the A-lister young set in attendance was Bachelorette Erin Higgins.
Even Max's dad, Prime Minister John Key, joined the fun, albeit in a dress shirt rather than superhero or villain costume. The PM was also photographed posing with two female guests in Batgirl costumes.
Earlier this week, Max Key thanked birthday wellwishers and promised his many social media followers something big was on the radar.