Foy plays Renesmee in the final installment.u00a0The pair, who play married vampire couple Edward and Bella Cullen in the franchise, had nothing but good words to say about 12-year-old at the premiere Wednesday night, reports contatmusic.com.

Speaking on the red carpet Kristen said: ''(Mackenzie's)like one of the coolest kids I've ever met. She's amazing.'' u00a0Robert added: ''I like working with kids - it's really easy. Kids do all the work for you! Everyone's got their focus on the baby and Mackenzie. Mackenzie's a great actress. It just makes it really easy, everything's spontaneous.''