The couple is planning on getting married within “months,” and has already started the wedding planning process.
A source told The Sun newspaper: “Russell caught everyone off guard with the engagement. They’ve decided they won’t be messing about and have already made plans for the big day.”
Russell has reportedly already asked his manager, Nik Linnen, to be his best man and told him to start preparing a speech. No word on who will be Katy's maid of honor, but she has an older sister, so we're assuming she'll keep it in the family.
Meanwhile, we're getting more details about Russell's romantic New Years Eve proposal in India.
He reportedly took Katy to one of the city’s ancient forts, where he bought her a £600 traditional Indian dress to wear, before they headed back to the luxurious Taj Rambagh palace hotel, where he had more surprises waiting for her.
As source at the hotel explained: “He had organized a special dining experience. We set a table in a garden with candles everywhere. They arrived in a horse and carriage with a glass of champagne and we served them dinner.
“At midnight they enjoyed fireworks while sitting on an elephant, which Mr. Brand specially requested. Then they were taken to the Mughal Garden - which was decorated by flowers and candlelight.
"Mr. Brand had given his butler the diamond ring to hide among the flowers. Miss Perry found it, he proposed, and she immediately said 'Yes'. After that they requested 45 minutes' privacy. They looked like they were beautifully in love."
Who says you can't tame a womanizer? Russell and Katy really do seem like they're head over heels for each other, so we can't wait to see these two tie the knot!