The BBC veteran, 51, was caught out wearing trainers while presenting on the popular news show.
Dan, 43, was co-presenting with Louise when he pointed out that she wasn't wearing her usual high heels.
Louise had temporarily left the BBC studio to interview a Chester Zoo representative and Brendan Rendall.
The pair explained how they are raising money to save the zoo - which has been suffering financially since the lockdown.
And when Louise returned to the red sofa with Dan, she forgot to swap her trainers for her heels.
"I haven't managed to change my shoes yet"
Dan teased her for talking to Brendan - who was dressed as a rhino.
He asked: "Are you alright after the rhino?"
Louise replied: "Do you know what, it's really nice to be outside."
She then glanced down at her feet and realised she had yet to change back into her white high heels.
She admitted: "I’ve realised I haven’t managed to change my shoes yet."
Dan cheekily responded: "Oooo trainers!"
Earlier on in the episode, some eagle-eyed viewers even spotted her pair of trendy Stan Smith trainers lurking on set.
In clear view of the cameras, the trainers were resting just inches away from Louise as she sat on set.
"Hide your trainers"
Quite a few viewers chimed in via Twitter and remarked on the casual footwear's television appearance.
One user admired: "Great taste in trainers."
Another user quipped: "@louiseminchin rocking Stan Smith's trainers on #bbcbreakfast. Must be on trend..."
And a third asked: "Running late Louise? Whose are those trainers behind the table?? Just caught a glimpse on @BBCBreakfast."
A fourth joked: "@louiseminchin hide your trainers."
The on air blunder comes just hours after Louise said she desperately wants a haircut.
Addressing her some 192,800 Twitter followers she shared a snap of herself and Dan on set.
"Deffo time for a haircut"
She captioned her pic: "Good morning, and hopefully, amongst other things hairdressers will open on the 4th of July. It’s deffo time for a haircut for me anyway!"
Indeed her report included exploring how hairdressers are set to open from early July.
However, many of Louise's fans argued that her hair looks great, and also praised her outfit.
One user wrote: "Looking fantastic x."
Another posted: "Morning gorgeous Louise, loving the new white heels again this morning."
And a third tweeted: "Your hair looks great Louise."
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