Back of Hills Girls and Celebrity Parents Make Time to Be Heroes Big-hearted stars of all ages got together for a sunny afternoon in LA yesterday at the 20th annual A Time For Heroes Celebrity Carnival to support the Elizabeth Glaser Pediatric AIDS Foundation. Ashlee Simpson and Pete Wentz brought Bronx to his first charity event, where he stayed close to mom and dad at the t-shirt making booth — check out an adorable video of Bronx below. Heidi Klum was there with her three kids who could not get enough of the giant slide. Most of The Hills girls made appearances though Lauren Conrad and Lo Bosworth showed up after Kristin Cavallari had already done her red carpet walk. Stephanie Pratt was preoccupied thinking about Heidi and Spencer down in Costa Rica while Lo joked that the carnival was more her speed than bug eating when it comes to charity. The Disney stars were also out in full force including Selena Gomez and a performance by Miley Cyrus to round out the day of philanthropy, delicious food and wholesome fun for so many families. View 55 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 To see cute video of Ashlee and Bronx as well as lots of photos including Vanessa Minnillo, Nick Lachey, Melissa Joan Hart and others just . View 55 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 Photo 10 Photo 11 Photo 12 Photo 13 Photo 14 Photo 15 Photo 16 Photo 17 Photo 18 Photo 19 Photo 20 Photo 21 Photo 22 Photo 23 Photo 24 Photo 25 Photo 26 Photo 27 Photo 28 Photo 29 Photo 30 Photo 31 Photo 32 Photo 33 Photo 34 Photo 35 Photo 36 Photo 37 Photo 38 Photo 39 Photo 40 Photo 41 Photo 42 Photo 43 Photo 44 Photo 45 Photo 46 Photo 47 Photo 48 Photo 49 Photo 50 Photo 51 Photo 52 Photo 53 Photo 54 Photo 55 Images include: Ali Landry, Ashlee Simpson, Pete Wentz, Bronx Wentz, Donald Faison, Dwyane Wade, Shenae Grimes, Kristin Cavallari, Lauren Conrad, Lauren Bosworth, Vanessa Minnillo, Nick Lachey, Melissa Joan Hart, Shawn Johnson, Miley Cyrus, Brendan Joseph Wahlberg, Mark Wahlberg, Heidi Klum Source Comments PopDiva24 8 years I can't take anything - even something charitable - that As$lee Simpson does seriously after the Michelle Trachtenberg incident. I was surely never a fan, but that whole thing was so completely appalling that I can't even stomach the girl any longer! PopDiva24 8 years lol, Tapioca! It used to be, not clearly not anymore! And I'm dying over the "how to pose" comment. I always make fun of one of my friends because she constantly poses like LC post-Barbizon modelling school. It looks so ridiculous. Lo's hair (extensions) look beautiful! Louie 8 years Looks like Lauren and Lo have been to same "How To Pose" school. sweetescape 8 years Lo and Lauren are beginning to look a like!!! Is it just me? spicyaroma 8 years Bronx is a gem, shame about his parents :oy: californiagirlx7 8 years Aww poor Bronx...he's a cute baby but he's got a terrible name and immature parents. That video of him was pretty adorable though. Tapioca 8 years I remember when this used to be an A-list event. ilanac13 8 years lauren looks cute there - i like the color of her dress :) it's nice to see that they are all charity focused :) it's fun to see them giving their support . jaan_black 8 years Kristin C is pretty...Ass*ole Simpson lost many cool points in my book after her tirade bravo7 8 years Kristin and Lo look great. Lauren and Shenae just look alright. Stephanie's outfit is a mess as usual.