Dynamic UICollectionViewCell width

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    UITabBarItem *item = self.items[indexPath.row];
    CGSize size = CGSizeMake(100, 30);
    CGRect expectedLabelSize = [item.title boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:@{ NSFontAttributeName:[UIFont VWTextOfficeRegularWithSize:12] } context:nil];

    CGFloat height = CGRectGetHeight(collectionView.frame);

    CGFloat width = ceilf(expectedLabelSize.size.width) + 40;
    
    return CGSizeMake(width, height);
}