Self-PortraitistsHilary Duff, Lebron James & More Celebrity Twitter Pictures (Photos)Mike Munoz09.16.12Self-PortraitistsHilary Duff, Lebron James & More Celebrity Twitter Pictures (Photos)Adam Shankman photo-bombs Dave Matthews, No. 23 in his 911, and P. Diddy heads to Big Sky Country. Plus, more of the best snaps the stars posted this week.Mike Munoz09.16.12 8:45 AM ETAdam Shankman photo-bombs Dave Matthews, No. 23 in his 911, and P. Diddy heads to Big Sky Country. Plus, more of the best snaps the stars posted this week. Twitter / @KingJamesLebron James“Headed to workout with @mister1223.#inmy911 #noceilings” wrote Lebron James when he posted this photo of himself in his Porsche. It’s been a big year for the basketball superstar, who won his first NBA Championship and his second gold medal at the London Olympics. Twitter / @HilaryDuffHilary DuffHilary Duff puts on a frowny face as she mourns the loss of a pair of shades in this photo. “Soooo SAAAAD!!! My go-to’s :(” she wrote. Twitter / @adammshankmanAdam ShankmanThe director and choreographer took in some tunes and posted this photo of himself at a Dave Matthews Band concert. “This was me photo bombing #DAVEMATTHEWSBAND last night :) #sneaky!” he wrote. Twitter / @iamdiddyP DiddyBig Sky Diddy posted this photo of himself vacationing in Montana. Last weekend, Daddy Diddy was spotted at a UCLA football game to cheer on his son, Justin Combs, in his first game with the Bruins. Twitter / @KatieHeiglKatherine Heigl“My mom and I just chillin' outside the White House yesterday!” wrote Katherine Heigl as she posted this photo of herself and her mother during an exclusive tour of 1600 Pennsylvania Avenue. Twitter / @dannypudiDanny PudiKnown for his role as Abed on NBC’s Community, Danny Pudi posted this photo of himself in Chicago White Sox swag. “Thanks @47Brand via @joelmchale. According to Joel, this fits perfectly on my 'coat hanger body type'. Weee! #WhiteSox” he tweeted. Twitter / @GarySiniseGary SiniseEmmy award–winner Gary Sinise posted this photo of himself and costar A.J. Buckley on the set of CSI: NY. The ninth season of CSI is set to premiere Sept. 28th on CBS. Twitter / @kyrasedgwickKyra Sedgwick“Me and King Felipe” wrote actress Kyra Sedgwick when she posted this photo of herself at Magnolia Square in Bitola, Spain. Sedgwick is starring now in the horror flick The Possesion, which is currently in theaters. Twitter / @JanefondaJane FondaThe Oscar winner and workout queen posted this picture on WhoSay of herself as Nancy Reagan on the set of The Butler with costars Alan Rickman, Forest Whitaker, Oprah Winfrey, and Cuba Gooding Jr. The film follows the life of a butler who served eight U.S. presidents and is expected to hit theaters next year. Twitter / @MichaelKorsMichael KorsIt’s been a busy week for the American designer and Project Runway regular, who has been in New York for Fashion Week. He spared a moment to post this photo and added “A moment backstage at #NYFW…#allaccesskors.” Twitter / @Sarah_HylandSarah Hyland“I missed my chicken parmagian from @paxfood SO MUCH!” wrote the Modern Family starlet when she posted this photo of herself staring longingly into a sandwich. The fourth season of the ABC comedy premieres Sept. 26. Twitter / @nicolerichieNicole Richie“With Harpers Bazaar’s @laurabrown99 and guys, she’s obsessed with me,” wrote the celebrity designer/mom of two when she posted this photo of herself and her new friend trying on a few pairs of sunglasses. Richie recently revealed her clothing line that will be sold at Macy’s.