You may recognise Evan Ross from his stint as Liam's angsty brother in 90210, or from all the pap shots of him with girlfriend Ashlee Simpson, but did you know he's also Diana Ross' son? Cool, huh? And, it's just been announced that the up-and-coming actor has been cast in The Hunger Games: Mockingjay as Messalla, a TV crew member who follows Katniss (Jennifer Lawrence) during her tour. Watch this face.