In a video clip, captured by live streaming app MyEye, Harry can be seen greeting Cruz and Romeo with a big handshake.
But Harper seemed less impressed with meeting the prince.
The adorable clip shows the 4 year old looking very nervous as Harry stretches out his hand.
But Harper just hides her hands up the sleeves of her red coat – which matched the Manchester United colours.
Brooklyn Beckham’s siblings were supporting their dad David as he made his much-anticipated return to Old Trafford.
Romeo, Cruz and Harper beamed with pride as they joined their dad on the pitch at Manchester United’s ground.
Becks later replaced Sol Campbell and played alongside his son Brooklyn, with them both wearing the famous No. 7 shirt.
And this led to the cutest throwback comparison picture EVER.
OK Magazine