The singer took to her Twitter.com page over the weekend (20-21Apr13) to complain about the heat in California, so Chisholm dared her to take off all her clothes and do a dance.
Brown went through with the challenge and posted a picture online showing her posing naked on her balcony, writing, "Had to do it ms Sporty Spice dared me and us northern girls gotta (sic) follow there when dared... Don't think I'm not gonna get you back, I just mooned the whole of Los Angeles hahaha!!!... Feeling very very liberated right now I strongly suggest everyone to do (sic) a naked dance double triple king dare."
The singer then stepped up the game by suggesting a dare for Chisholm and Halliwell, challenging them to walk into a pub together and sing a Spice Girls song. She writes in a message to them both, "Are you ready for your dare???... Ok and you Geri walk into a pub and sing the chorus of Say You Be There (sic) loud and I want a vid (video) to prove you did it ok!!... Ok ladies ya (sic) both got your dares can't wait!!!!! Hahahahahaha double triple dares."
Chisholm accepted the challenge, writing, "I was born ready!" and Halliwell added, "Ok , 4 u (for you)... On my list this week... But we must dare u (sic) back."