The English teenager, who signed for BVB from Birmingham City, is already emerging as a leader within the dressing room.
Having now been at Dortmund for over a year, Bellingham is not shy about letting his teammates know about his thoughts.
Speaking to DAZN about Bellingham, Hummels said: "He is the most mature 18-year-old player I have ever seen.
"Jude is already someone who leads the way and he's also one of the loudest in the team.
'He's a great kid, I think I've told him about 25 times now that I just love him."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!