Lindsay Lohan 'appalled' at Justin Bieber slam

Lindsay Lohan is reportedly "appalled" with Justin Bieber after the singer poked fun at her in a rant about rehab.

The 19-year-old mocked Lohan's alleged tax problems and touched on her past issues with addiction in a boastful Instagram post hitting back about the "countless lies" being told by the press.

Justin Bieber performing during his 'Believe Tour' at the Manchester Arena.
Lindsay Lohan arrives at Nozomi restaurant with her minder and some friends. The group stayed for around two hours. London, England - 02.01.13 Featuring: Lindsay Lohan Where: London, United Kingdom When: 02 Jan 2013

WENN / Will Alexander/WENN.com

"[I] don't think I deserve all of this negative press I've worked my ass off to get where I am and my hard work doesn't stop here," he wrote. "I'm growing up finding myself while having people watch me and criticise me everyday i think im doing pretty damn good.

"And to those comparing me to Lindsey Lohan look at her 2012 tax statements ;)"

Bieber soon deleted the post, replaced it with a message taking out all reference to Lohan and apologised to the Mean Girls star, saying that the jibe "distracted from what I was trying to say".

Photo gallery - Bieber's bad boy antics:

Copyright: Rex Features!

Howev! er, sources close to TMZ have said Lohan is still "appalled" at what was said, and believes his comments were "senseless and mean".

The publication also claims that Lohan never had any problem with Bieber, and has no idea why he chose to single her out on an international platform.

Bieber has been at the centre of multiple scandals over the last few weeks during his trip to the UK, which saw him arrive two hours late for a show at The O2, take ill on stage at a separate concert and get in a confrontation with a photographer.