It follows her co-host Rylan Clark getting into trouble last week for doing the same thing, as Dan Neal went up for the chop and was ultimately evicted.
Following the latest round of Big Brother 2013 nomination results, Callum Knell, Dexter Koh, Hazel O'Sullivan and twins Jack and Joe all face the axe.
But we knew three of those chosen some hours before the reveal after AJ tweeted a picture of Rylan in the Bit On The Side studio.
Once again, the pair failed to realise that the picture spoiled the results, with the faces of those nominated highlighted behind them.
Twitter user KimberleyBates tweeted the pair: "@AJOdudu @RylanClark @bbbots are the people in green up for nominations this week I guess?"
And Alex Nagel raged: "@AJOdudu @RylanClark MESSED UP AGAIN !!"
The nomination results were eventually revealed live to the house during the 10PM highlights show.