The 'Countdown' star said she was sorry about leaving partner Pasha to go it alone for the interview on Thursday morning:
The brainiac-turned-dancer can be forgiven for oversleeping though, as she's been in intense practise for the BBC dance contest's first live show on Friday.
Talking about her glamourous 'Strictly' transformation, Rachel tweeted:
Meanwhile, 'BBC Breakfast' host Susanna Reid has admitted she is petrified ahead of the first live show.
Susanna - whose professional partner is Kevin Clifton - is quoted by PA as saying: "I find it really hard to remember the steps because it is not in my nature to memorise movements."