Kids these days. Bruce Jenner is reportedly having trouble coming to grips with 17-year-old daughter Kendall Jenner spending so much time with pal Justin Bieber — and honestly, can you blame him? "Bruce adores Kendall and never approved of her hanging out with Bieber, so the fact she’s now spending so much time with him has sent him into orbit," a source tells Radar Online. "Kendall’s extremely strong-willed and she’s not listening to anyone about this, even her dad."

RELATED: This Vogue shoot may cement your dislike of Young Hollywood

Jenner has "tried everything, from sending emails and Facebook messages to confronting her about it in person," the source adds, but nothing is working. The power of the Biebs is just that strong.

Follow Ned Ehrbar on Twitter: @nedrick