The campaign was launched October 2015 but is just getting its full dose of publicity; it is a joint venture between Country Life magazine and Keep Britain Tidy.
The Queen's actual birthday is in April but her official birthday is celebrated in June.
The response on Twitter has been mixed with genuine interest overshadowed by funny, nasty, hilarious and cutting comments.
One story back doing the rounds is the Queen's inability in 2012 to pay her own cleaners the living wage.
There are comments about public spending budget cuts which have added to the litter problem that is now a problem across the UK; reduced refuse collections, insufficent rubbish bins and cuts to street cleaning services all add to the problem
Queen Elizabeth II ascended to the throne February 6, 1952 and less than one-year later this writer was born.
Childhood in 50s and 60s Britain was very different to 2016.
We played on WWII bombsites, endured homes with no bathrooms and outside toilets, stood for the National Anthem which was played in cinemas at the end of performances and put our litter in bins; if bins were not available we took our litter home.
But times change.
Our parents were monarchists and accepted the huge 'them and us' divide. We may have had a relatively basic life back then but my parents obeyed the rules and that included litter.
We were taught by them not to be litter louts; the Keep Britain Tidy campaign which came into force in the 50s backed this up.
Keep Britain Tidy was originally set up by a conference of 26 organisations in 1955.
Somewhere along the line standards dipped.
You can walk along any High Street in 2016 and observe people simply dropping litter, including containers with discarded food, as they walk.
For these people there is no attempt to find a bin.
But #cleanforthequeen will not change any of this.
In fact plenty of people on Twitter claim they will actually be inclined to litter rather than be involved in any way in #cleanforthequeen.
News days ago that fines for littering will increase, possibly to as much as £150, may have more of an impact but how many readers have ever seen a police officer challenge a litter-bug?
With police numbers on the streets cut good luck with policing that one.
Perhaps in the current cut-price Britain the jobless will be forced to work on supporting the big British clean up; maybe even issuing fines.
While some of this is not new [my husband worked on a land clearance scheme in the 80s when regular work was in short supply] this Tory government always wants something for nothing.
Whether you are a litter lout or not depends on many things including if you value your surroundings, appreciate your environment, feel you are part of the place, have a pride in your city, village or town and your upbringing.
If your parents are littler louts it is likely you will follow suit.
But #cleanforthequeen has a limited appeal.
With the country split between republicans and monarchists and British nationals and migrants #cleanforthequeen is far from perfect.
Getting Britain clean for the Queen's 90th birthday is getting a big British clean up on the cheap.
Keep Britain Tidy as it is your country and looks it’s best un-littered; discarded food encourages rats and increases their population.
A littered country is bad for wildlife and the environment.
Treat your country outdoors as you would treat your home unless you are a slob indoors.
Above all do it for you and not the Queen.