This is a modern version of the traditional bridal maang tikka that most young women prefer today. After this piece was popularised in many bridal fashion shows and on the red carpet, it has become an accessory of first choice for functions like the engagement and reception, where the look can be a little less traditional. If you want a more traditional look, choose a chain of pearls with a simple maang tikka, just like Deepika here.
Style tip: A jewelled chain will add more glamour to a bouffant or bun.