Kelly Osbourne has asked fans to support her brother Jack after he confirmed that he has multiple sclerosis.

As previously reported, it has been revealed that Jack Osbourne has been diagnosed with MS only weeks after he became a father for the first time.

Speaking on Twitter, his sister Kelly Osbourne praised his "bravery and honesty" and proclaimed that she loves him "so much". She said:

"Please support my brother @mrjacko in not only his bravery but honesty! i love you so much jack & I'm so proud of you!"

Kelly Osbourne meanwhile had earlier been tweeting about a mystery illness she was battling, saying:

"I have been puking so much over the passed 24 hours I feel like someone has ripped my stomach muscles from my ribs!"