10 rare photos of pregnant Princess Letizia's beautiful baby bump

Letizia was close to her due date with her first baby in this snap, pictured in a sophisticated pleated dress with matching long jacket at Spain's national day in Madrid on 12 October.

The Spanish Queen exuded class in her black trousers and top ensemble paired with a short, white blazer in this photo, taken in September at Zarzuela Palace, a month before Leonor arrived.

It was a cool red maternity top and chinos for Letizia in August 2006 as the pregnant royal attended the 24th Copa del Rey Sailing Trophy in Mallorca.

The expectant mum wore this elegant black satin top and matching trousers for the Breitling Sailing Cup dinner at San Carlos Castle in Palma de Mallorca in July 2005.

We loved Letizia's cream dress and coordinated long cardigan, coupled with her pretty fan in this picture. 

The pregnant royal was attending the Christening of Princess Irene, the daughter of Princess Cristina of Spain and her husband Inaki Urdangarin in July 2005.

Letizia was pregnant with her second child Sofia in this photo, taken in April 2007, shortly before her daughter's birth. The royal chose a monochrome patterned outfit, purple coat and matching shoes for an awards ceremony in Madrid.

The royal looked stunning in this grey coat and all-black outfit while expecting baby Sofia in March 2007, as she attended a Save the Children event at Zarzuela Palace.

Letizia wowed in this all-maroon ensemble at a luncheon in Madrid in March 2007 during her pregnancy with her second child.

It was another patterned dress for Letizia in January 2007 as she showed off her perfect bump at the Royal Palace in Madrid, Spain.

There was a little hint of a baby bump in November 2006 when Letizia wore this classic cream coat belted just above her tummy, captured at the Monumental Theatre in Madrid.