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Lil Duval - @LilDuval: 9-11-01 I was in St. Louis and the next day I was suppose to be doing a show in new york at Carolines (Photo: Brad Barket/PictureGroup)

Photo By Photo: Brad Barket/PictureGroup

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Jay Z - @S_C_: Sept 11 (Photo: Mark Davis/PictureGroup

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Nicki Minaj - @NickiMinaj: Sending my love to the victims of 9/11. Remembering the heroism. The brave men & women. The troops. We become alive in the time of fear. (Photo: Gregg DeGuire/PictureGroup)

Photo By Photo: Gregg DeGuire/PictureGroup

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Diddy - @iamdiddy: God Bless all who [were] effected by 9-11 (Photo: Ethan Miller/Getty Images

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Mashonda - @MashondaLoyal: NYC is saddened today. It's hard for me to even watch the documentary on tv. God Bless us all and please give these families extra strength. (Photo: Walik Goshorn / Retna Ltd)

Photo By Photo: Walik Goshorn / Retna Ltd

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Kimora Lee Simmons - @OfficialKimora: Remembrance and resilience on 9/11. My thoughts and prayers 2 the families of all affected. Wishing Peace+Happines+Rest. ♥ Cherish Life. I recall being IN my Apt at the World Trade jst hrs b4 the attacks. Wht a diff 10 yrs makes! #StrengthAndLove♥ #AlwaysRemember (Photo: Albert L. Ortega/PictureGroup)

Photo By Photo: Albert L. Ortega/PictureGroup

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Kim Kardashian - @KimKardashian: My thoughts and prayers go out to all of the families affected by the awful tragedy of 9/11 (Photo: Gregg DeGuire/PictureGroup)

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Talib Kweli - @TalibKweli: Skip religion and politics and focus on compassion. #NYC #911 (Photo: Kodak Jones/PictureGroup)

Photo By Photo: Kodak Jones/PictureGroup

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Keri Hilson - @MissKeriBaby: The world will never forget Sept 11, 2001, when America's peace was imposed upon. May peace be w/ victims' families, survivors, & heroes. (Photo: Gregg DeGuire/PictureGroup)

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Lala Vazquez-Anthony - @lala: On this day, 9/11, we remember,we reflect,& we pray.May God bless those who have lost some1. May God bless the heroes. May God bless us all. (Photo: Stephen Lovekin/Getty Images

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Monica Brown - @MonicaBrown: For he will give his angels charge of u to guard you, Psalm 91:11...Dedicated to those who lost loved ones on 9/11 Continued prayers 4 u all (Photo: Frederick M. Brown/Getty Images)

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Solange Knowles - @solangeknowles: September 11th. May God bless those who have loss. May God bless the heroes. May God bless us all. (Photo: Terrence Jennings/Picture Group)

Photo By Photo: Terrence Jennings/Picture Group

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Lil Wayne - @LilTunechi: Remembering those we lost on this unforgettable day. God bless their families and may their souls rest in peace.(Photo: Scott Gries/Getty Images)

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Bun B - @BunBTrillOG: 9/11. Never forget. I'd just finished watching "Gandhi" @bunbwifey yelled from the other room "A plane flew into the World Trade!" Ran in and saw plane 2 crash. We looked at each other in shock for a few seconds, then jumped in the car. Drove to Yates and grabbed @princessoftrill and @youngbYNC Got cash, filled the tank, got non-perishables and water, went home, loaded my guns and waited. Around 2 I got a call. Mama Wes was in NY. Pimp was mad and worried. Took a while to get her on the line. Half the windows in her downtown hotel had been blown out, but she was ok. Eventually talked to my friends in NYC as well. People were distraught, confused and upset, but happy too. (Photo: Rick Diamond/Getty Images)

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Raekwon - @Raekwon: My condolonces to all 911 victims. (Photo: Adrian Sidney/PictureGroup)

Photo By Photo: Adrian Sidney/PictureGroup

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Marlon Wayans - @MARLONLWAYANS: 10 years ago I was in ROME promoting scary movie 2. I watched the Towers go down & It felt as tho some1 tore the heart out my chest...Being from NYC, all I couldI rememberwas the feeling of wanted to GET HOME! & like all NY'ers I wanted to fight 4 my city. I LOVE NYC always (Photo: Michael Buckner/Getty Images)

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Serena Williams - @serenawilliams: My Thoughts and prayers to all who lost loved ones on 9-11. I know the entire country is with you today. I'm playing for you today. (Photo: Neilson Barnard/Getty Images)

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Snoop Dogg - @SnoopDogg: #NeverForget (Photo: fafotos/picturegroup)

Photo By Photo: fafotos/picturegroup