Yup, I did change it. Though the woman in my last signature was Rebecca Ferguson, she's a British singer/songwriter, she's not as popular as she should be so I'm not surprised you don't know who she is.
Haha, I actually remember the trainer saying that in my Platinum version, which is why when I saw the image on Tumblr, I put it in my signature immediately. :3
Thanks, Paramore are my favourite band. :D