Coleen, 28, touched down in South America this morning (17 June) ahead of husband Wayne's next England game, which is against Uruguay, on Thursday.
Tweeting about their safe arrival, Coleen told her followers: "Am here and it's lovely!! So excited!!"
Coleen has also headed out to Brazil with her mum and dad, Colette and Tony, and was spotted leaving London with a mountain of luggage.
However, setting the record straight, the mum-of-two also tweeted: "There are more people in my party than me and the kids.... Nappies, formula milk, toys, bottles, wipes...
"And a lot of clothes to stay to the end of the tournament!! I have faith and support my country!!"
Before flying to Brazil, Coleen shared a gorgeous picture of herself, four-year-old Kai and Klay, one, as they headed to the airport together.
Alongside the snap, she commented: "We're off!! Come on England!!"
Fingers crossed you do need to stay and use all those clothes, Coleen!
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