Birthdays

Avery is getting so excited for her 4th birthday, which is rapidly approaching.  She has been talking about it for weeks.  When we were browsing through Target's toy section so she could give me some birthday gift ideas, she asked me when her next birthday (after this one) would be.  I explained that we have a birthday every year, so the year after this one she will turn 5.  Her response was, "Then why did Garrett have 2 birthdays?"  Ahh...sibling rivalry.