In first part of Breaking Dawn movie, Bella had given the birth to a daughter but the movie didn't show anything of the newest member of the Cullen clan. So if you're willing to see how Bella and Edward Cullen's daughter would look, you can see her in this photo.
Being half-vampire/half-human, Renesmee's growth rate is faster than normal human being and so she doesn't look like any two or three weeks baby.
The Twilight Saga: Breaking Dawn part-2 will be in cinemas on November 16 this year.
The updated new photos from EW.COM:
The character posters from Breaking Dawn part-2: