Hollywood actor Leonardo DiCaprio will definitely tie the nuptial knot with his girlfriend Bar Rafaeli.

DiCaprio's "Shutter Island" co-star Emily Mortimer made this declaration

Mortimer said that Leonard and Rafaeli are made for each other.

"I didn't know he wasn't married! I'm sure that he will, yes, and be very happy," she said.

Niece of the late Giorgio Armani, Roberta Armani, who is also DiCaprio's best friend, echoed Mortimer's opinions.

"They are very similar. Not only do they look alike, they are both very lively and warm. No pretences at all," Armani added.

DiCaprio and Rafaeli split in June 2009 but renewed their kinship in November after the brilliant actor took Bar for a grand holiday in the Bahamas. (With Input from Agencies)