As we reported in May, President Barack Obama called on his lil' buddy Justin Bieber to help brighten up one New Jersey teenager's day. And thanks to Obama's help, three daughters of two fallen 9/11 victims -- Payton Wall (14), her sister Avery (12), and her best friend Madison Robertson (14) -- were able to meet their ultimate idol, Justin Bieber.

The three girls met with Bieber at his 'Someday' perfume launch in Macy's on Thursday last week, where they had a private sit-down with the 'Never Say Never' cutie and the cardboard cutout of Obama that the girls comically hauled along. Although the girls were very excited to meet Bieber, the trio was starstruck after seeing the singer and struggled to speak.

"It was so cool. I couldn't even believe it," said Payton after meeting the Biebs in a VIP section on the eighth floor of Macy's."He just said 'Hi.'" She continued on, saying that she was more nervous to meet Bieber than the President! "He was asking us about the perfume and if we were wearing it," Payton said, with her sister Avery commenting, "He was really nice and is so cute ... He didn't even look real."

The girls' meeting with Bieber came as a result of a letter campaign Payton and her best friend Madison started. Madison and Payton, whose fathers -- Cantor Fitzgerald executives Glen James Wall and Donny Robertson -- were both killed in 9/11, sent letters out to entertainment outlets as well as the White House asking if they could somehow meet Justin Bieber. Well, their dreams were fulfilled, and by the President none the less!

Obama read one of Payton's letters and invited the teen, her mother, her sister, and Madison to a wreath-laying ceremony at Ground Zero this May. "I know Justin," Obama told her. "Maybe I could set something up."

Payton posted a message to her Twitter account thanking Bieber on Saturday, writing, "just want to say thanks to @justinbieber for taking the time to meet me! I told scooter i would send him the pics of us and the cutout!"

Watch a Video of Payton and Her Family Meeting President Obama at Ground Zero