Talk about an aww-dorable moment! Jessica Simpson took to Instagram on Saturday to share a sweet photo of son Ace hanging out with Rocco, pal CaCee Cobb's son with husband Donald Faison. "BFF's in the making! @caceecobb #ACEANDROCCO," Jessica captioned the photo. Jessica joined Instagram last month and has been sharing pictures of her adorable family ever since. She started with a sweet shot of her daughter, and ahead of the Super Bowl, she showed off Maxwell and Ace in their 49ers gear. This week, Jessica posted even more cute snaps, including a selfie with her son, who was "captivated" by American Idol. Scroll down to see all the family photos!