The loved-up pair enjoyed lunch in North London on Saturday, when the 25-year-old bride-to-be gave waiting photographers a first look at the diamond band. Brand proposed with the sparkler on New Year's Eve, at the exclusive Taj Rambagh Palace hotel in Jaipur, India.
A member of staff revealed: '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,' ther source explained.
The £30,000 two-carat ring was picked out by Brand himself.
It is believed that like their whirlwind romance, the pair won't wait around long to wed, with friends speculating that they could be Mr and Mrs Brand within months.