Rob Kardashian may be more lucky in love than his older sister, Kim — the “Dancing With the Stars” runner-up has a hot new girlfriend.

Sources tell us the younger brother of the Kardashian clan and recent “DWTS” finalist, 24, is secretly dating singer Rita Ora.

Pretty blonde Ora, 21, is signed to Jay-Z’s record label, Roc Nation, and appears in Drake’s video for his song “Over.” She has also modeled and appeared in commercials for ckOne fragrance.

The new couple were reportedly set up by Rob’s friend, rapper Lil’ Romeo, a few months ago, but the only public evidence of their connection is a few exchanges on Twitter.

Kosovo-born, UK-raised Ora got her big break in 2008 after singing on British crooner Craig David’s songs “Awkward,” and “Where’s Your Love?” In 2009, she was signed to Roc Nation when she was just 19, and she has been working on her debut album, due out next year.

Sources say the relationship is so fresh that Rob’s sisters Kourtney, Kim and Khloe may not even know of Ora, who splits her time between London and the US.

“Rob lives a life separate to the girls and is definitely a ladies’ man,” one source told us. “But he wouldn’t have more then one [woman] at a time. He’s a good boy.”

Rob and Rita are planning to make their first public appearance as a couple tonight at the Dream Downtown, where Rob will DJ an event for Macy’s new active-wear line, Ideology. Professional dancer Cheryl Burke, Rob’s partner on “DWTS,” is Ideology’s spokeswoman.

Rob previously dated Disney actress Adrienne Bailon, who was featured on the E! reality show “Keeping Up With the Kardashians” until they split in 2009. It’s likely that if Rob and Ora’s relationship continues, it could be yet another romantic Kardashian plot line.

A Roc Nation rep had no comment, and a Kardashian rep declined to comment.