Popsugar Celebrity Rihanna Celebrity News Week of Sept. 1, 2019 Rihanna's Diamond Ball, and 2 Other Things You Missed This Week 6 September 2019 by Monica Sisavat Solís Image Source: Getty / Taylor Hill Summer is officially over, y'all! Well, at least, according to Mariah Carey. The 49-year-old singer bid farewell to the season with a sexy bikini photo earlier this week, but she wasn't the only star who kissed it goodbye. Jennifer Lopez was feeling "forever young" during a yacht day with fiancé Alex Rodriguez in St. Tropez, while Nina Dobrev and boyfriend Grant Mellon steamed up the beach in Hawaii. If you were distracted by all the fun getaways this week, get caught up on everything else that happened with the latest edition of Things You Missed This Week. 1 Happy Birthday, Marsai Martin! Image Source: Getty / Jerritt Clark The Black-ish star turned 15 on Aug. 14, and she recently celebrated with a neon-themed bash in LA. The party included a bunch of treats, a large tic-tac-toe board, and it was basically a teenage dream. Read More 1 / 3 2 James Middleton's Adorable Date Image Source: Getty / David M. Benett And the award for cutest pair goes to James Middleton and his dog, Ella. Pippa and Kate's younger brother brought his Cocker Spaniel as his date to the GQ Men of the Year Awards in London on Tuesday, and yep, the photos are even cuter than they sound. Read More 2 / 3 3 Rihanna's Diamond Ball Image Source: Getty / Taylor Hill Rihanna's annual Diamond Ball is going down on Sept. 12 in NYC. But do you actually know what it is? Get all the details ahead! Read More 3 / 3 Rihanna