Thomas Rhett is celebrating a milestone with his family and that's little Ada turning 2 years old. Rhett took to his social media to share a video of him singing "Happy Birthday" to a sleepy Ada. Ada seemed to not be with the all wake for her birthday song but Rhett caption the video "Happy 2nd birthday to my sleepy baby girl🕺love you so much AJ! I really wish time would stop and you would stay this little forever (and preferably sleep like an hour longer each morning) I guess it’s time to start playing with the 48 barbies you got from your grandparents and family😂"