How To Create Circular Diplay Picture and Rounded Corner..!!!!!

UIImageView *imageview = [UIImageView alloc] init];

imageview.layer.cornerRadius = imageview.frame.size.width / 2;
imageview.layer.borderWidth = 3.0f;

imageview.layer.borderColor = [UIColor whiteColor].CGColor;
imageview.clipsToBounds = YES;