Justin Bieber has been catching a lot of heat following his DUI arrest in Miami ealier this week, but his good friend Floyd Mayweather let the teen pop star know that he's behind him during this tough time. The boxing champ shot Justin a message on Instagram, reading, "Keep your head up and know that you can overcome anything you are faced with in life. The Money Team supports you @justinbieber."

Kevin Hart also spoke out about Justin's arrest during a recent interview with Rocsi Diaz for Entertainment Tonight. The "Ride Along" star offered some words of comfort for Justin, saying "I'm very close to Justin. I've got a lot of love for him. You know, I think right now it's just a lot of pressure on him. That media attention sometimes isn't good when you're going through things, and at the end of the day, Justin's young -- he's a teenager ... These things are being magnified and the public is judging him from it."

Check out Mayweather's message in the above slide:

Source: Instagram

Photo Credit: Splash News