Supergirl Production Begins 3/4/2015 2:08 am

Welcome, finally, to the first day of production on CBS' Supergirl. We have been waiting for this day since we heard that there was even going to be a show. Our excitement must pale in comparison with Ali Adler, Greg Berlanti, Glen Winter, Andrew Kreisberg, cast, crew and so on!

Twitter exploded with shots from the set, the trailers, and peoples general excitement. Here is our collection of all the great photos that are flooding the internet:

And here are the Tweets we've captured:

WOW, we are left speechless, the tweets and photos say it all, but if you have more to add comments are open and just below!