Actress Sarah Jessica Parker has dropped a massive hint that 'Sex and the City 3' might be happening.

The actress has posted a picture on Instagram of her leaving Bloomingdales in New York.

It was followed with the caption 'Well. I guess the cat's out of the (little brown) bag'.

She says she is under a 'strict gag order' and she will keep fans 'posted' as soon as she is allowed.

 

Well. I guess the cat's out of the (little brown) bag. As usual, we will keep you posted on every detail as we are able. I'm under strict gag order until then. Xx, Sj

A photo posted by SJP (@sarahjessicaparker) on May 11, 2015 at 1:03pm PDT

There has been widespread speculation as to whether or not a third 'Sex and the City' film will be made.

It follows on from the first film adaptation in 2008, and the second - set in Abu Dhabi - from 2010.

The TV show of the same name originally ran for six seasons from 1998 to 2004, and made the four main stars household names.