The sisters looking stylish in their romantic Two Birds dove grey bridesmaid dresses, carrying white rose and gypsophilia bouquets, and matching chignons hair styles.
Mollie posted the snap on Instagram with the caption, 'Blonde power!! #KingSisters #Bridesmaids.'
The excited pair watched Ellen get hitched to long-term boyfriend Harry Thurman, in the countryside town of Egham in Surrey. Enjoying the sunshine - Mollie later had a crack at the outdoor garden games - including this big buzzer one...
The Two Birds bridesmaid dresses are a popular choice owing to their 15 different styles of wearing. Mollie opted for the 'one shoulder twist' style, whereas sister Laura modelled the 'Grecian twist middle back' halterneck style.
Also seen on Lady Gaga in pale pink for her stint as a bridesmaid at her friend's wedding in June, the dress costs £250 and comes in 20 different colours.
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