Ouch — these celebs
know how to throw some serious shade! From the best disses to the worst, who
had the last word and who totally missed the mark? Click to find out!

• Worst: John Mayer on Jennifer Aniston

  By InTouch Weekly.

  The
  singer threw Jen under the bus back in 2010: “The brunt of her
  success came before TMZ and Twitter. I think she’s still hoping it goes back to
  1998.” Um John, have you SEEN a movie as of late?

• Best: Milton Berle on RuPaul

  By InTouch Weekly.

  Exchanging
  disses live at the 1993 VMAs? Awkward much! RuPaul may have started it, but it
  was Milton that got the last word: “Oh, we’re going to ad lib? I’ll
  check my brain and we’ll start even.” 

• Worst: Russell Brand on Katy Perry

  By InTouch Weekly.

  When
  asked about his sex life, Russell remarked: “I’d be having sex
  thinking, ‘Think of anyone, anyone else.'” Somehow, we think Katy
  would be anything BUT boring in bed!

• Best: JT on Britney Spears

  By InTouch Weekly.

  EVERYONE
  knew who ‘Cry Me A River’ was about, and Justin reaped all the benefits of his
  hit record and video. Some call it petty, but we call it genius!

• Worst: Justin Bieber on Usher

  By InTouch Weekly.

  Justin
  may be Usher’s protégé, but the Biebs was caught on record barely acknowledging
  his mentor: “Yeah, Usher, that sounds familiar.” Haven’t you
  ever heard, “don’t bite the hand that feeds you”?

• Best: Kanye on Taylor Swift

  By InTouch Weekly.

  Out
  of line? Totally. But there’s no denying that Kanye’s diss to Taylor at ’09
  VMAs will go down in history as one of the best, ever: “I’m sorry, but
  Beyoncé had one of the best videos of all time!”

• Worst: Kelly Osbourne on MJ

  By InTouch Weekly.

  Kelly
  actually tweeted this: “Can people just get over Michael Jackson. He’s
  dead!” Ever heard of a little thing called respect, girl?

• Best: Elton John on Madonna

  By InTouch Weekly.

  We
  can’t fault Elton for being brutally honest about Madge: “Anyone who
  lip-synchs in public on stage when you pay $134 to see them should be
  shot.” After all, he IS the king of live!

• Worst: Jesse James on Sandra Bullock

  By InTouch Weekly.

  When
  asked which woman was better in bed, Jesse James was quick to
  respond: “That one is an easy no-brainer: Kat Von D—100 percent. She’s a
  vixen.” Really Jesse, really?

• Best: Taylor Swift on…Everyone?

  By InTouch Weekly.

  Taylor goes so far as to make fun of herself in ‘Blank Space,’ but not before dissing just about everyone else who has called her crazy before. Haters gonna hate, so she’s just gonna shake it off!