Celebrity Parents Breanna Stewart, Wife Marta Xargay Casademont Welcome First Baby, Daughter Ruby: 'Best Moments' WNBA stars Breanna Stewart and Marta Xargay Casademont revealed their engagement news in May By Benjamin VanHoose Benjamin VanHoose Twitter Benjamin VanHoose is an Associate Editor on the Movies team at PEOPLE. He's worked at PEOPLE for over three years as a writer and reporter across our Entertainment, Lifestyle and News teams, covering everything from the Johnny Depp v. Amber Heard trial to the Oscars. He regularly covers red carpet events and has interviewed stars like Drew Barrymore, Ryan Reynolds and Kirsten Dunst. He previously worked as a copy editor at Topix Media Lab. People Editorial Guidelines Published on August 16, 2021 08:20 AM Share Tweet Pin Email Photo: Anna Burns for TOGETHXR Breanna Stewart and Marta Xargay Casademont are moms! The basketball stars welcomed their first baby together, daughter Ruby Mae Stewart Xargay, via surrogate on Aug. 9, they reveal exclusively with PEOPLE, sharing photos of their newborn. They announced their engagement in May. "Ruby's arrival has been the best part of 2021 and easily one of the best moments of my life," says Breanna, 26. "Becoming a mom is bigger than anything else that I've done and I look forward to every beautiful and challenging moment as a family of three." Breanna plays for the Seattle Storm and won a gold medal at the Tokyo Olympics with Team USA. Marta, 30, played for the Mercury in 2015 and 2016 and was back in training camp with Phoenix for the first time since, as the couple was together at the WNBA bubble in Bradenton, Florida, for the 2020 season. Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. Anna Burns for TOGETHXR RELATED GALLERY: Who's Due Next? Celebs Who Are Expecting The birth of their baby will be documented in a new short film, which premiered Monday, from TOGETHXR, a media platform and commerce company, and sports media brand Bleacher Report. A press release about the short film points out that for women athletes "there's a whole set of considerations for your body that male athletes don't have to navigate, including family planning." Anna Burns for TOGETHXR Breanna froze her eggs while she was recovering from an injury in 2018. Coming off a WNBA championship, Breanna quietly decided to expand her family via a gestational surrogate. Marta discussed the surprise engagement in May, according to Arizona Republic, including how Breanna invited her to go hiking so she could get down on one knee in nature, even if Marta wasn't totally on board with the excursion at first. RELATED GALLERY: Celebs Who Were Really, Really Good at Keeping Their Baby News a Secret "I was complaining because she wanted to go hiking. You know Phoenix is super hot so I was just like, 'I don't want to be outside.' She planned the whole day, telling me let's go for a walk, do something, take pictures. I was like, 'Okay, let's do it,' " she recalled. "I wasn't expecting that to happen. In the end, it turned out to be a really good day," added Marta.