The Strictly Come Dancing stars often talk about the BBC show being one big "family", but viewers are convinced there's some secret bad blood behind the scenes.
In tonight's show, many spotted what looked like Katya Jones, 30, giving Catherine Tyldesley a "dirty look".
It started after Catherine and her partner Johannes Radebe's tango failed to impress the judges.
When the duo went upstairs to talk to Claudia Winkleman, 47, about the dance, Katya didn't look very happy.
The professional dancer appeared to scowl as Catherine, 36, dissected her routine, something that wasn't missed by viewers at home on Twitter .
One tweeted: "I'm not sure if Katya was dishing Catherine Tyldesley a dirty look then or it's just her resting b**** face."
Catherine and Johannes receieved a low score of 28 for their routine.
Craig Revel Horwood gave them a six, Motsi Mabuse and Shirley Ballas gave sevens and guest judge Alfonso Ribeiro gave an eight.
Shirley was critical of the foot work, but still managed to pay them a compliment.
She said: "I love the passion that you bring, so I think you're in it for the long haul."
And Alfonso was impressed, saying: "You made us feel this hotness you have rolling and I love that."
Catherine admitted it had been a struggle to change the pace from last week's waltz.
She explained: "It's completely different to what we did for the waltz, you're learning new stuff every week."
But Johannes was thrilled with their efforts, adding: "I'm extremely happy, I'm extremely proud of this woman."
