THE legendary Big Mac just got bigger.

McDonald's has launched two new burgers to celebrate 50 years of the signature burger.

The first is the Grand Big Mac - which features bigger burgers in a bigger bun and lots of cheese.

It is described as a "double cheesy, extra beefy" Big Mac with two larger 100 per cent pure beef patties sandwiched between a sesame seed bun and dressed with two times the special sauce, lettuce, onions, pickles and two slices of American cheese.

However, there is also the new Mac Jr for those who prefer less of a mouthful.

It has the same toppings but is smaller and with one less patty.

The new burgers were launched on Wednesday, February 7, but you need to get your hands on them quickly, as they will only be around until March 20.

Somerset County Gazette:

The Big Mac was first created in February 1968 by an American named Jim Delligatti in Pennsylvania.

He originally wanted to call the burger 'The Aristocrat', but McDonald's chose to go with the now famous name, Big Mac.

The first Big Mac was introduced to the USA in 1969 and is now sold in more than 100 countries.

Following its success in the States, the burger arrived here in 1974 when the first UK restaurant opened in Woolwich, London.