Rihanna spent her 23rd birthday last night (Sun. Feb 20) providing entertainment for the halftime show during the 2011 NBA All-Star Game. Joined by rappers Drake and Kanye, the singer served up a performance medley that included her hits “Umbrella,” “Only Girl (in the World),” “Rude Boy,” “What’s My Name?” (f/ Drake) and “All of the Lights” (f/ Kanye).