Princess Beatrix and Princess Mabel Attend the 1st Prince Friso Engineers Award at the university of Twente, The Netherlands, 18 March 2015.

Princess Beatrix (R) and Princess Mabel attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015. The award is for engineers who excel in innovation capacity, entrepreneurship, personality and social impact.

Princess Mabel of the Netherlands attends the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix of the Netherlands attends the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix (R) and Princess Mabel (C) attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix of the Netherlands attends the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Mabel of the Netherlands attends the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix of the Netherlands attends the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix (R) and Princess Mabel attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix (R) and Princess Mabel attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix (R) and Princess Mabel attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.

Princess Beatrix (R) and Princess Mabel attend the 1st Prince Friso Engineers award for the Engineer of the Year at the university of Twente, The Netherlands, 18.03.2015.