Brody Jenner and Spencer Pratt have come a long way since the latter told his childhood friend "I got nothin' to say to you" during a memorable confrontation on "The Hills." Fast-forward a few years: the Cali natives have buried the hatchet and Heidi Montag's hubby couldn't resist honoring the notorious ladies' man on his 31st birthday -- with an epic throwback of the strapping young(er) lads lounging in a golf cart, of course.

"#tbt Happy Birthday @brodyjenner the Prince of Malibu! #princesofmalibu," Spence captioned the Instagram photo above, taken during the longtime buddies' days on the FOX reality series back in 2005. While their faces haven't changed much over the years (they're still rocking similar 'dos), the same cannot be said of their preppy wardrobe. We definitely wouldn't catch them wearing that type of attire out and about these days in Tinseltown, or at the hot spot formerly known as Les Deux (RIP).

Spencer wasn't the only one to give Lauren Conrad's pal and Kristin Cavallari's ex some special attention on his day of birth: His girlfriend Kaitlynn Carter shared a sweet Instagram snapshot with her "favorite person in the world."

Be sure to wish Brody a happy birthday in the comments below!