The actress tweeted a picture of herself (left) with her husband-to-be Sahil Sangha at their mehndi ceremony.
Dia wore a marigold yellow anarkali while Sahil wore a red kurta, a matching Nehru jacket and white churidar pajama.
The couple, who have been dating for the past five years, will get married on October 18 in Delhi.
Dia Mirza to get married on October 18
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Dia Mirza gets ready to wed!