0"This Is It" PremiereUpdated Jul. 14, 2017 6:48PM EDT / Published Oct. 28, 2009 5:19AM EDT Matt Sayles / AP Photo Jennifer Love HewittMatt Sayles / AP Photo Jennifer LopezMatt Sayles / AP Photo Neil Patrick Harris Jason Merritt / Getty Images Paula AbdulMatt Sayles / AP Photo Jackie Jackson, Tito Jackson, and Marlon JacksonJason Merritt / Getty Images Paris HiltonJason Merritt / Getty Images Adam Lambert and Katy Perry Matt Sayles / AP Photo Ashley Tisdale Kevin Winter / Getty Images Will SmithKevin Winter / Getty Images Julianne HoughJason Merritt / Getty Images Martin Lawrence with daughters Lyana and AmeriaMatt Sayles / AP Photo
Jennifer Love HewittMatt Sayles / AP Photo Jennifer LopezMatt Sayles / AP Photo Neil Patrick Harris Jason Merritt / Getty Images Paula AbdulMatt Sayles / AP Photo Jackie Jackson, Tito Jackson, and Marlon JacksonJason Merritt / Getty Images Paris HiltonJason Merritt / Getty Images Adam Lambert and Katy Perry Matt Sayles / AP Photo Ashley Tisdale Kevin Winter / Getty Images Will SmithKevin Winter / Getty Images Julianne HoughJason Merritt / Getty Images Martin Lawrence with daughters Lyana and AmeriaMatt Sayles / AP Photo