The Simple Life star Nicole Richie and her fiancé, "DJ AM" Adam Goldstein, have broken off their engagement, her rep tells PEOPLE.
"They have called off the engagement," publicist Cindy Guagenti confirms, saying the decision was mutual.
Richie, the 24-year-old daughter of Lionel Richie, and Goldstein, 32, announced their engagement in February after dating for a year. By then the pair had already moved into a Hollywood Hills home together.
"He had a talk with my dad (asking to marry me) and my dad started crying," Richie, who described Goldstein as "sexy and funny and extremely talented," told PEOPLE last month. "I'm looking forward to marriage. Your name changes, which will be exciting."
It already has been a busy year for both Richie and Goldstein. Richie just released her book, The Truth About Diamonds (a thinly veiled novel about a Hollywood socialite), and she's gearing up for the fourth season of Simple Life, which is moving from FOX to the E! cable network and will once again costar Richie's estranged pal Paris Hilton.
Goldstein, meanwhile, has remained a regular fixture at Hollywood hotspots, deejaying for parties and celebrity clients. Speaking to PEOPLE about Richie in June, he said: "I absolutely want to start a family with her. Nicole is one of the funniest people I know – she's my best friend."