Label with multiple lines, constrained to width. Use with -sizeToFit.

multilineLabel.m

@interface MultilineLabel : UILabel
@property (nonatomic) CGFloat maximumWidth;
@end

@implementation MultilineLabel
- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        _maximumWidth = 200;
    }
    return self;
}
- (CGSize)sizeThatFits:(CGSize)size {
    CGSize sz = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(_maximumWidth, 999)];
    return sz;
}
@end