Kate Hudson got the sweetest birthday serenade from her 2-year-old daughter, Rani Rose. The star celebrated her 42nd birthday working on set, but still managed to get plenty of love from her three kiddos. «A super early set call means I miss the morning birthday snuggle but this...THIS!» Hudson captioned the video of Rani, whom she shares with boyfriend Danny Fujikawa, singing her the «Happy Birthday» song.