Enrique Iglesias and Anna Kournikova have welcomed their fourth child, adding another bundle of joy to their growing family.The couple made a joint announcement of the exciting news on Instagram on Monday, Dec. 22, sharing a photo of their Baby No. 4, sleeping soundly next to a small plush toy. They wrote in the caption:"My Sunshine 12.17.2025." View this post on Instagram Instagram PostAnna Kournikova and Enrique Iglesias's newborn arrived on Dec. 17, joining twins Lucy and Nicholas (8) and daughter Mary (5). The pair is yet to reveal further details about the new baby, such as the gender.The longtime couple had been over the moon as they awaited the arrival of their fourth child, an insider told People in November."They are so excited, and also spending time getting their other three kids. [They're] ready for change and controlled chaos." View this post on Instagram Instagram PostIn August, Enrique Iglesias and Anna Kournikova announced they were expecting their Baby No. 4. At the time, a source shared rare insight into the family."Anna and Enrique are very happy to become parents again. They have proven to be great parents to their three children, and both of them love the process. They enjoy the activities and all that goes along with raising children."Amid the forthcoming new milestone, Enrique Iglesias chose to pause his touring to spend more time with his partner and three children. The source added:"He loves his fans and loves to tour, but as he has gotten older and become a parent, it has been harder for him to leave. He will never forsake his fans, but being a dad is very important to him."Enrique Iglesias and Anna Kournikova's relationship: A quick timelineEnrique Iglesias and Anna Kournikova have been together for 21 years.The couple first met in December 2001 when the former tennis star and model appeared on the "Latin Pop King's" music video, Escape.They made their first public appearance as a couple at the 2002 MTV Video Music Awards.In 2007, the Hero crooner revealed in an interview that his relationship with Anna Kournikova was "the only serious relationship I've had in my life."As their relationship progressed, the topic of marriage started turning up. But for Anna Kournikova, in a 2011 interview, commitment was much more important to her."[Marriage] isn't important to me. I'm in a happy relationship — that's all that matters. I believe in commitment. I believe in being open and trusting each other and respecting each other completely." View this post on Instagram Instagram PostEnrique Iglesias shared the same sentiment. In 2012, he opined that marriage wouldn't make a difference in his relationship with his partner."Maybe it's because I come from divorced parents, but I don't think you love somebody more because of a piece of paper. Nowadays, it's not taboo to have kids and not be married."The Bailamos hitmaker continued:"What makes a difference is that you're a good parent, period."