I've been looking forward to this day for 15 months. The day when our girls would play together. I had no idea it would be like this.
Here is the routine:
1. Follow big sister to somewhere just out of Mommy's sight.
2. Have big sister "help" you do something new, like drink from a big girl cup, color with markers, climb on top of the kitchen table, "clean" the toilet or brush your teeth.
3. Laugh hysterically when Mommy discovers you and nearly has a heart attack.