Justin Bieber is set to meet a victim of 9/11's daughter after President Obama promised her some private time with the 'Baby' star. 

The Canadian hitmaker was sent a message on Twitter back in February by 14-year-old Payton Wall, who originally wrote:

"Hey! I have an awful life story and without your music idk if i could have survived. do you think i could send you a letter?"

The young fan, who is from New Jersey, decided to take Bieber's lack of response into her own hands and wrote to President Barack Obama who in turn invited her to attend the ceremony at Ground Zero with him on May 5.

The Post has since reported that Obama promised Wall a personal meeting with the 'One Less Lonely Girl' singer and when flooded with comments from doubtful fans, Bieber tweeted last night (May 12):

"I think you're wrong. pretty sure President @BarackObama will keep this promise. #payitforward"

Watch Bieber and Chris Brown's impromptu on stage collaboration from a recent concert here: