Kelly Rowland and Michelle Williams had an adorable get-together on Tuesday. In a video posted to Kelly's Instagram, the former Destiny's Child members are seen reunited and singing to Kelly's son, Titan. While Beyoncé sadly wasn't in attendance (she's currently sunning herself in Italy with Jay Z), Kelly and Michelle still managed to grab the attention of the 10-month-old. In the short clip, Titan sits on Michelle's lap as the two sing "Hi, Titan. I love you, man," in perfect harmony. Kelly welcomed Titan with her husband, Tim Witherspoon, last November, just six months after they tied the knot in Costa Rica. Watch the sweet moment above, then check out this other Destiny's Child reunion in July.