By Andrew Holleran WNBA star Skylar Diggins-Smith announced some big personal news on Instagram this morning. The WNBA star, who’s coming off a big season, announced she’s pregnant with her second child. “New addition loading 🧡,” she announced on social media on Monday. The WNBA star is getting a lot of love following her announcement on Monday. The WNBA star had her first child back in 2017. “The Mercury’s Skylar Diggins-Smith announces her pregnancy on Instagram. This will be her second child, as she gave birth to a son in 2017. Congratulations to her!” one fan wrote. “Just a reminder as Sky…