Tony Nungary/1Oak

Justin Bieber sang his heart out for some lucky fans at 1Oak, on Saturday night. He left his usual streetwear at home and donned a pink jacket and newsboy cap in honor of Lovers' Day.

Actor Jamie Foxx was celebrating his daughter Corinne Foxx's birthday. Later, Foxx jumped on the mic to hype up the already excited crowd and invited Bieber on stage to join him. Waiting in anticipation, fans snapped photos and chanted his name in hopes of convincing the recording artist to perform. Giving into the crowd, Bieber broke out into an exclusive performance of his Grammy-nominated hit "Where Are Ü Now."

After the impromptu performance, Bieber made his way back to the VIP section where he continued his night with friends including G-Eazy. Giving a nod to Valentine’s Day, Bieber got in the spirit and bought roses for all the ladies in the crowd Saturday night. Stunned with excitement, all the girls in the hot spot thanked the A-lister and took to social media to post photos of their roses.