McDonald's just made a major change to the Big Mac - here's how its new burgers stack up

The Big Mac - America's burger - just got better.

Well, bigger. And smaller.

McDonald's is rolling out the "Mac Jr." and the "Grand Mac" this week after months of testing.

The Mac Jr. is a smaller, single-patty cheeseburger with all the other Big Mac accoutrements. The Grand Mac is an even larger version of the Big Mac, with 61% more beef than its precursor.

We grabbed the three members of the Mac family to see how they compare.