The 43-year-old ITV political correspondent is a contestant on the latest series of the BBC dancing competition.
Ranvir and her partner Giovanni Pernice scored a whooping 27 out of 30 with their Foxtrot to a Jennifer Hudson hit from the film Dreamgrirls.
GMB weather presenter Laura Tobin greeted co-star Ranvir and told her what a great job she had done at the weekend.
She also cheekily pointed out Ranvir's shoe situation so the host came clean and showed viewers.
"Ranvir, can we talk about it yet? You were so amazing at the weekend, your hair, your make up!" Laura said.
Ranvir, who presented the first 30-minutes of GMB, gushed: "Thank you, to be fair the Strictly magic, some of it is the dancing but a lot of it is the hair, the make up and the outfit right?
"It looked like I was from a poster from the films."
Laura giggled: "And can we just point out your feet hurt a lot, so today you're wearing..."
Flashing her feet, Ranvir: "I am wearing my slippers, I'm so sorry."
"Ranvir was reading the news headlines to you earlier this morning in her slippers," added Laura.
"The Cha Cha Cha, the balls of my feet are so sore, but nobody needs to know this, I'm sure it will all be lovely on Saturday," Ranvir explained.
Ranvir confirmed she and Giovanni would be dancing to a Carlos Santana song.
Later on in the show, host Piers Morgan explained: "She came into the pre show briefing and she was complaining about her bunions, or something.
"But no pain no gain, Ranvir, you're on an unstoppable train to victory!"
It comes just weeks after Ranvir was forced to host GMB with one of her feet in an bucket of icy water.
She admitted that dancing had left her sore feet and said the GMB team had given her icy water to help soothe the pain.
At the time, Ranvir said: "This week two malarkey is really hard.
"You've got hardly any days and you are learning a whole new dance."
Showing her painful foot, she explained that the water was soothing her aching body ahead of her next training session.
Good Morning Britain airs weekdays on ITV at 6am