急~~帮我用英语写封信祝我妹妹生日快乐，字数多一点，她9岁了~！！！

dear某某，

(给你自己的亲妹妹，你该自己写啊。我只能提供格式和祝词。你可以写写你和她之前的感情和趣事。写你给她什么礼物。希望她喜欢等等）

Because today"s your birthday ,because I love you so , because the happiness we share means more than I can show, because of little thoughtful things you so often do ,with all my heart i"m wishing every happiness for you.Happy Birthday !

love
你的名字
日期