Kylie jenner and cody simpson are dating

Their mother was a novelist, their father a photographer.

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In 2014, Ashlee married another Hollywood sibling -- one with a very famous pedigree ...

Ashlee Simpson's husband, actor Evan Ross, is the brother of "Black-ish" and "Girlfriends" star Tracee Ellis Ross.

Dennis Quaid, left, is known as the star of films such as "Great Balls of Fire," "Wyatt Earp" and "The Parent Trap." His brother, character actor Randy Quaid, has appeared in "Brokeback Mountain" and "Kingpin."Jessica Simpson, left, and Ashlee Simpson Ross both had hot singing careers in the aughts.

Jessica went on to build a successful clothing and housewares business.

Owen and Luke have appeared in several films together, including "Bottle Rocket" and "The Royal Tenenbaums."Eric Roberts poses for a photo with a young Julia Roberts, right, and their sister Lisa Roberts Gillan, also an actor.