Lily Allen has questioned Jessie J's momentous success at last night's MOBO awards in London. 

The 'Price Tag' singer took home an impressive four titles, including Best UK Act and Best Album, but Allen has now spoken out on social networking site Twitter about the credibility of her success and asked her followers why exactly she dominated the list of winners:

"Now, I love Jessie J as much as the next person, but how is her music 'of black origin' ? Is it cause she says 'man dem' in her tune?"

"I am happy for her, I'm a big supporter of hers, I just don't get the logic of those awards."

Watch Jessie J perform 'Do It Like A Dude' at last night's (October 5) MOBO awards here: