Khloe Kardashian
Khloe Kardashian wished French Montana a happy birthday on Instagram. Getty

American reality TV star Khloe Kardashian has sparked rumours that she has reconciled with her former boyfriend French Montana after wishing him a happy birthday.

The Keeping Up With the Kardashians star took to Instagram to share an image of her and Montana at a beach.

"Happy birthday baby boy! In only a short amount of time we have created timeless memories. Happy birthday to a man who genuinely lives life to its fullest. "What's understood doesn't need to be explained" @frenchmontana I can't wait to celebrate life with you tonight! You deserve it!!" she wrote.

Kardashian who filed for divorce from professional basketball player Lamar Odom in December, has been romantically linked to the rapper since April of this year.

However, the two split in September, after the 30-year-old Kardashian found out the I Ain't Worried About Nothin' hitmaker was texting her best friend without her knowledge.

Khloe had recently revealed that she is single and currently "not dating anybody" after breaking up with Montana.

"We all miss French. We love French," she told E! News. "I'm still friends with him. I still talk to him everyday. I talked to him before I came here."

Meanwhile, in a recent interview with Us Weekly at Power 105.1's Powerhouse 2014 in New York City, Montana said he is hoping to rekindle his romance with Khloe.

"Our relationship – you break up you make up, you break up you make up," Montana said. "We went through that a couple times. You never know."