One Direction heartthrob Harry Styles has seemingly left a bit of an impact on Alli Simpson after she called him "amazing".

Simpson, who is sister to singer Cody, had earlier tweeted that she was attending a secret event, before saying yesterday (June 20): "Wanna know the secret event I attended on Monday? I had the privilege to join @ONEDIRECTION in the @RADIODISNEY studios & interview them."

She then tweeted a picture of herself with Harry Styles, along with the caption:

"What An Amazing Lad, @Harry_Styles."

As previously reported, Harry Styles recently said that age doesn't really matter when dating someone - as long as you are happy.