It may not be official just yet, but Australian singer Kylie Minogue is not wasting time to congratulate her ex-boyfriend and his current girlfriend on their rumored engagement.

Minogue and Martinez dated for four years before splitting in 2007. While they were dating, Minogue credited the French actor for helping her through the dark days of her battle against breast cancer.

A representative for jewelry designer Gurhan told "People" on Wednesday that Martinez gave Berry a diamond-and-emerald engagement ring. However, neither party has confirmed the couple's plan to marry.

Meanwhile, pop star Kylie Minogue proved that she harbors no hard feelings towards her ex-boyfriend Olivier Martinez and his new fiancée Halle Berry.

In fact, Kylie was among the first to send her warm wishes to the couple today following the news of their engagement. "Congrats to Olivier Martinez and Halle Berry!! #wedding," the Australian pop star, 43, wrote on Twitter.

French actor Olivier and Kylie dated for five years and he supported her through her battle with breast cancer before they split in 2007.

"He was incredible. He didn't hesitate in canceling work and putting projects on hold so he could be with me. He's the most honorable man I have ever met," the singer shared.

Kylie is now in a relationship with Spanish model Andres Velencoso but she and Olivier still appear on friendly terms with each other to this day. Olivier even took Halle to watch his former love perform on stage during her sold out concert in Los Angeles in May.

Martinez, 46, is said to have proposed to Halle, 45, with an emerald-and-diamond ring which the "Catwoman" actress has been seen sporting recently.

The actress was first pictured with a ring on her wedding finger on December 29 of last year and it lead to a speculation that Martinez planned a Christmas proposal.