12/12/2011 09:19 GMT | Updated 12/12/2011 12:41 GMT

Kelly Rowland's X Factor Behaviour Called Into Question

X Factor fans have called Kelly Rowland's behaviour on last night's final show into question, even taking to Twitter to express their concern.

The Destiny's Child singer appeared unusually animated as she told Marcus she was "in love with him" and wished Little Mix a "Merry Fricking Christmas".

Rowland, who's amused viewers with her feedback on acts throughout the series, went one step further last night and fans begun to question whether she'd over-indulged in the green room.

One tweeter wrote:

Another said:

Later in the show, she broke down in tears as Little Mix performed their rendition of Silent Night. Her appearance on ITV2 spin-off show Xtra Factor also raised eyebrows, when she danced in the studio for an interview with Caroline Flack and Olly Murs.

The judge, whose acts had all been eliminated by the final, showed support for Marcus Collins and Little Mix throughout the show, but some tweeters commented that it was insincere:


However, Rowland took to Twitter to deny allegations that she was drunk, she wrote:

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X Factor Final