Lorraine Kelly has said she is "baffled" by Esther McVey's claim that she was promoted above her at GMTV, adding that she strongly disagrees with her politics on LGBT rights.
The daytime TV star shook her head and looked shocked as she watched a clip of the Tory leadership hopeful - MP for Tatton in Cheshire - telling a press conference that the pair used to share a dressing room.
Rumours of a feud between the two women have swirled after Kelly appeared to "snub" her former colleague live on air on Monday, when the politician was a guest on ITV's Good Morning Britain.
Esther McVey 'snubbed' by Lorraine Kelly on Good Morning Britain:
Asked about their history by ITV News Political Correspondent Paul Brand, the Tory leadership hopeful offered some insight as to what was behind the frosty reception.
McVey said: "Well, we used to share a dressing room and she used to be the programme afterwards and obviously she used to be partnered with Eamonn Holmes and then I was promoted to be partnering with Eamonn Holmes."
McVey explains what she says happened between her and Lorraine:
However, when Kelly was shown the clip from the press conference by Piers Morgan during GMB on Tuesday, the presenter dismissed her claims.
Morgan said to her: "So (she is) basically inferring there you lost in a kind of love war over Eamonn?"
Kelly replied: "Well, who wouldn't want to fight over Eamonn Holmes?" before adding: "No, there is no battle. I'm baffled by that though because I had my own show from 1992 and I don't actually think she joined until five years later.
"As far as sharing dressing rooms go, it wasn't really like that. It's not palatial like it is now. I know Piers, you've got your Winnebago.
"It was just a little room that everybody shared, that we went in and we got ready in.
Lorraine says she's baffled by McVey's explanation:
"It wasn't a dressing room with couches and all of that, it wasn't palatial at all."
Pressed by Susanna Reid if the pair were "best friends", Kelly said: "I will be genuinely honest with you, I don't remember.
"It was a long time ago, my show was totally separate from that show."
Asked if she approves of McVey's politics, she said: "Yesterday, Piers, I will be honest with you, I just got sick to the back teeth of the whole toxic political atmosphere.
Lorraine on McVey's LGBT stance:
"I strongly disagree with her on LGBT rights and I just felt like I've had enough of this, we've had two-and-a-half years of going round in circles over Brexit and now we've got people at each other's throats and its got to stop."
McVey has drawn criticism for saying parents should have the right to withdraw their children from lessons where they are taught about LGBT relationships.