Tenth Doctor and Elizabeth I's wedding

From Tardis Wiki, the free Doctor Who reference
The Tenth Doctor is kissed by Elizabeth I, in view of his past and future incarnation. (TV: The Day of the Doctor)

In 1562, the wedding between the Tenth Doctor and Queen Elizabeth I was attended by the Eleventh Doctor, Clara Oswald and the War Doctor. This came about after the Tenth Doctor accidentally proposed to her in a ploy to prove that the Queen was in fact a Zygon. When it turned out that it was instead his horse that was the Zygon, though, he was forced to carry through with the marriage. (TV: The Day of the Doctor)