Sophia is a strong girl for 13 weeks. A few weeks ago she starting standing up with me just holding her hands! She is schooching on her back and tummy. At her YMCA "class" she goes to while I workout... the lady had her in an exersaucer and the bumbo chair this week! I didn't know she was ready for these already! So I found her a Baby Einstein Exersaucer on Craigslist for $15--- and she loves it. She figured out how to hit the buttons for the animal sounds and smiled when she made it play the song. And she likes the book with the cow and tried to turn the pages too. Big girl ! !