They've traveled the world together for her VH1 reality show The Price of Beauty and teamed up on a line of clip-in hair pieces, but the ultra-close Jessica Simpson and hairstylist pal Ken Paves have reportedly hit a rough patch recently. "They've had a major fight," a source tells E! News about "something petty" that's caused a crack in their relationship. "Jessica's devastated over it, she loves Ken. He just won't speak to her at all." The singer-actress tried to mend the rift over the summer by inviting the stylist to Capri, Italy, in July for her 30th birthday celebration, but he declined. And though they haven't been spotted together for months, Paves insists they're still friends. "Jess is very supportive of my other relationships as I am of hers! The truth is we have both been busy and and on different schedules," he tells E! News.