Only Queens have sat on the throne of the Netherlands since the 1800s.
The last two Queens of the Netherlands have both abdicated in favour of their daughters:
- In 1948 Queen Wilhelmina abdicated after 50 years on the throne which spanned two World Wars.
- Her daughter Queen Juliana abdicated in 1980.
Prince Willem-Alexander would become the first king since King Willem III died in 1890, if his mother Queen Beatrix does abdicate tonight.
- Source: www.koninklijkhuis.nl
More top news
Labour leader Ed Miliband is due to set out his party's plans on how it would cut tuition fees.
New drug driving laws are to come into effect next week, including laws on some prescribed medications.
The Duke of Cambridge followed in his mother's footsteps today as he visited Commonwealth War Graves in Japan.