Sunrise weatherman Sam Mac announced the arrival of his baby girl and already Margot Grace McMillan is one month old.Watch Below: Sam Mac and Bec James' pregnancy videoHis caption – which read more like a heartfelt and personal letter – reflected on his short time with his baby girl."Dear Margot," Sam began."You're 1 month old today! & my goodness, you came in like a wrecking ball! It was always going to take a lot to see me relegated to 2nd biggest diva in the house, but you managed that in your first few hours. When you want something, oh my, do you let us know! Your face turns redder than Barnaby Joyce & your scream reaches 2 octaves higher than Jimmy Barnes."You appear to have a never ending supply of "surprises" shooting out of your mouth or bottom, sometimes both at the same time.