Gianna was the first to walk. She started walking close to a month ago. She was never a big crawler. She was the first to sit, and then just sat and sat and sat... Once she figured out how to crawl (she was the last), she quickly began to walk around on her knees instead. I think the balance that it took for her to walk on her knees helped her to progress to walking rather quickly.
Ellery has been taking a few steps for a couple of weeks now. She has finally started to want to walk, and is getting closer to doing well!
Easton has been the last to walk - he would much prefer to climb! I think he is motivated to walk only because he sees his sisters doing it. When he wants to get somewhere faster then them, he inevitably crawls or climbs there.