Her famous dad David Beckham was clearly having a proud father moment on Sunday as he took to Instagram to share a photo of his youngest child wheeling along without stabilisers.
"Look at my big girl - Day One - No stabilizers," wrote David alongside a heart emoticon.
David Beckham proudly shared a photo on Instagram of his little girl learning how to cycle
The former football player shared the arty photo from what looked to be the Beckhams' garden in their home in West London. In the black-and-white snap, Harper was pictured wearing a safety helmet and gripping tightly onto the handlebars while her older brother Brooklyn guided her around the grass.
The 16-year-old is clearly fond of his baby sister. In his role as a dutiful big brother, Brooklyn took Harper toy shopping over the weekend.
Also this weekend Brooklyn Beckham took Harper toy shopping
The aspiring model shared a photo of himself standing in a store aisle, looking as cool as a cucumber in skinny jeans, a denim jacket and a pair of sunglasses, and captioned it: "Shopping with my lil sis."
Their brother-sister outing came on the same day as the FA Cup Final, when David treated Brooklyn and his other two younger sons to a day out at Wembley Stadium.
Leaving little Harper and his wife Victoria behind, the former England football captain and his boys Brooklyn, Romeo and Cruz watched Arsenal defeat Aston Villa. David's mother Sandra and his sister Joanne also joined for the family event.
David Beckham and his sons watched the FA Cup semi final on Saturday
The Beckhams were given the full VIP treatment, watching the action from the best seats in the house and later enjoying a dinner of pie and mash in a private box.
Seated with their friends around a large square table, David and his brood tucked into their meal. The 40-year-old later shared a snapshot on Instagram, captioning it: "FA cup & Pie & mash cheers Tony."