Celebrity Celebrity Family Celebrity Babies Christina Aguilera Shares Baby Bump Photo "Happy 1st Day of Summer!" the mom-to-be writes By Alison Schwartz Alison Schwartz Alison Schwartz was the former director of digital platforms at PEOPLE. She died in 2020. People Editorial Guidelines Updated on January 25, 2022 02:18PM EST Photo: Courtesy Christina Aguilera Summer is getting off to a bumpy start for Christina Aguilera. The mom-to-be, 33, shared a selfie (ahem, bumpie) of her growing baby belly on Twitter over the weekend. “Happy 1st Day of Summer!” she wrote, plugging Eos lip balm. Aguilera is expecting a daughter with fiancé Matthew Rutler. The singer is already mom to 6-year-old son Max from her previous marriage to Jordan Bratman. “I’m really excited to meet our baby girl,” she told PEOPLE earlier this month. “This has been a very easy and enjoyable pregnancy.”