It looks like Vanessa Morgan to me! Her web site says she has two older siblings, but doesn't say anything else about them. Could she be teamed with an older sister? I've looked and haven't found any further information about any sisters or brothers.
Update:
I found a couple of pictures of Vanessa with her sister Celina (possibly Celina Mziray). They do look like they could be the Pink Pants team, at least in some of our pictures. In others, they don't look like them to me. I didn't post the pictures of Vanessa and her sister here due to possible copyright issues, but you can see them at:
http://twitpic.com/62k1rzhttp://imgur.com/r/VanessaMorgan/x5dxqAlso, for what it's worth, Vanessa's dog, @CutenessChanel, hasn't been tweeting lately either.
We really need to recruit some 10-14 year olds to research things like this.