The Big Girl Booster Seat

Today was another one of those unwritten milestone days... Sydney rode in a booster seat in the car for the first time. We bought a high back booster seat so we could rotate the seats - it's getting hard to put Zack into his carset with his winter coat on, so we gave him Sydney's seat. That means Sydney got to graduate to a booster seat, with only the seat belt holding her in now (no more 5 point harness!). It is a bit easier to belt her in. She really looks like a big kid now. What will be next, no need for cups with straws?!