It's a girl for pop diva Christina Aguilera and her fiancé Matt Rutler! And they picked a phrase for her name—SummerRain. She joins big brother Max Liron. Summer is currently a top 200 baby name (at 188), and among the most popular season names (Autumn is the other red-hot one, at #65).
Rain hasn't hit the top 1000 yet, and it makes a nice nature-themed middle name.