Summer Rain Rutler was born Aug. 16, 2014. She is Christina Aguilera's youngest child and the only child she shares with current partner Matthew Rutler. Summer is already following in her mom's footsteps with her singing skills, which Christina showed off in an Instagram story with Billboard. She also noted that the dogs were not loving it, so maybe Summer needs a little more training with mom. Summer has also already done a bit of modelling. She and Max joined Christina in a special issue of Harper's Bazaar in 2018. In the magazine, Christina said, "I love being a mama bear and providing support, strength, and a safe haven to my babies and loved ones, knowing that, above all else, it's the most important job I have."