As Courtney Love brands Taylor Swift 'unimportant', FEMAIL lays bare her most SCATHING celebrity takedowns - from furious feud with Madonna to her open 'hatred' of late husband Kurt Cobain's bandmate Dave Grohl
Courtney, 59, has never held back when it comes to letting her opinions be known - no matter how controversial they may be - and the songstress isn't about to start keeping her critical opinions to herself.