Although we're sure Matt enjoyed the 38-year-old's display of affection, everybody else seemed to find it a bit awkward. Particularly fellow judge Louis Walsh, who's facial expression said it all really. Simon Cowell even suggested the former Pussycat Doll was "in heat." Charming!
After putting her leg away, the judges went on to gush about Matt's show-stopping performance. Louis said that the 23-year-old "had everything," while Sharon asked if he could repeat his "scarily good opening look" for her.
Nicole quickly added her input, saying: "Motown just got electrified ’cause you were so freakin’ hot… You were oozing and dripping with charisma and talent. Seriously, baby."
The only judge with anything bad to say was Simon, who was booed by the audience when he claimed Matt's vocals were not as good as the previous week.
Matt is so far the front runner to win this year's competition - at least if saucy Nicole has anything to say about it!
Watch a clip of Nicole's naughty antics below!