Nadia, 56, lifted up her dress to flash her black knickers as she revealed that she'd been wearing her dress wrong for the entire show.
Holding up the khaki dress, Nadia stood in the middle of the ITV studio with her stomach and legs on show as she revealed the separate slip part of the dress she hadn't put on.
The table and TV screens of the show could be seen in the background, as Nadia stood next to the doorway heading backstage in the hilarious snap.
Nadia captioned the picture: "Epic wardrobe fail! Loved my dress on @loosewomen today but something felt a bit odd!!
"My god what a wally?!! I hadn’t realised there was a slip!!
"I’ve been in lockdown too long! I can now OFFICIALLY no longer dress myself?!!"
Unsurprisingly, it didn't take long for Nadia's fans to rush to the post to comment on the hilarious TV blunder.
One said: "Eee I bloody love you.. this is top shelf malarkey."
Another added: "This just made me spit my tea out laughing.
"Anything would feel a bit funny after almost a year of lockdown clobber though."
A third said: "Ha ha I love this…Epic Fail."
Nadia's hilarious admission comes after her candid post about Christmas bloat, as she pretended she had a "food baby" in a new picture.
Holding up her top to show off her bloated stomach during the festive season, Nadia joked about being pregnant.
She posted: "Wow … Mine and @mark_adderley prayers have been answered !!," she captioned the hilarious photos.
"And we had so much fun making our little one.
"And have now been blessed with what the most perfect food baby ever . Each day I can feel her growing and am overwhelmed with emotion .."
Loose Women continues on Monday at 12.30pm on ITV.