Bloom, 37, attacked Bieber, 20, after he made references to Kerr, with whom he was said to have an affair during her marriage to the 'Lord of the Rings' actor, reported Daily Mirror.
Kerr apparently thinks her ex-husband Orlando shouldn't have taken a swipe at the pop star.
"Miranda wants all of this behind her and she just wants to move on from this and go about her life. She is very embarrassed about everything that has gone on," a source said.