Rainbow Baby Pregnancy Announcement - big sister sharing the news:)! I've come across a picture on Pinterest for the last couple of years that I LOVE of a little girl painting a rainbow in the sky. My good friend recreated the photo for me and my firstborn rainbow baby is so excited to be a big sister to her little rainbow brother/sister!! The chalkboard sign reads "At the end of every storm is a rainbow...Can't wait to be a big sister: Feb '15!" Photo by House of Harkless