Princess Beatrice & Eugenie Go Out with Edoardo Mapelli Mozzi & Jack Brooksbank on Double Date

Royal sisters Princess Eugenie and Princess Beatrice went out in London's Notting Hill last Friday, and they brought their significant others with them.

Although they reportedly met up with Eugenie's husband Jack Brooksbank later, it was a trio that was spotted by the paparazzi: Princess Eugenie, Princess Beatrice, and Edoardo Mapelli Mozzi, Beatrice's beau. All three appeared to be holding hands, in a sweet show of affection.

Both princesses dressed for a summer night out. Eugenie opted for a tie-waist navy dress, biker jacket, and heels. For her part, Beatrice paired a black dress with a Pinko coat, Gucci shoes, and a bag by Sophie Stanbury for Sienna Jones, per Hello!

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Beatrice and Edo pose for a photo at the National Portrait Gallery gala.

Royal watchers have been seeing more and more of Edoardo (or "Edo," as his friends reportedly call him) since he and Beatrice started dating last fall. In March, the couple made their first official appearance together at the National Portrait Gallery gala; about a month later, Edo joined Beatrice on a family trip to Bahrain. During the latter, Sarah Ferguson was even seen hanging out with the couple.

princess beatrice edoardo mapelli mozzi The Wedding Of Lady Gabriella Windsor And Mr Thomas Kingston

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Beatrice and Edo arrive at Lady Gabriella Windsor’s royal wedding.

And when Edo joined Beatrice to attend Lady Gabriella Windsor's wedding in May, the duo cleared yet another milestone: their first joint appearance at a royal event. It only encouraged rumors that the two were getting serious—and that wedding bells might not be that far away.

Even back in November, it seemed marriage was on the table. "They could even be tying the knot in 2019—it's already been discussed by her friends," a source told the Sun at the time.