The summer she turned 21, Kate Middleton's parents planned an elaborate '20s-themed birthday party for her (well, what do you expect, since her mother is the party planning queen?)

Invitations were sent out, her then-boyfriend, Prince William, the future Duchess, would attend and meet her parents, and everything was going according to plan.

Now, I don't know the backstory, and it's possible there was no other day that Ginny could have just made it work that day, but even so, I feel like she should have at least warned Middleton about it' sounds like she did not, her friends of some of the two women had to choose between the two, and since the current royal family was reportedly really hurt over it.

The Cambridges' friends spoke to royal expert Katie Nichol about the matter for her book, Kate, Our Future Queen. 'Kate was very upset. Kate was very upset" (from the Mirror). Middleton apparently "cut Ginny off a bit after that.

But all's well that ends well, and the party went smoothly in the end. Importantly, Prince William also made a great impression.

"Many of [the guests] knew each other, and William knew quite a few of the people there, so it was very relaxed," said one guest.

"We all gave him some privacy and he kept to himself.

"It was a sit-down dinner and dance, and William looked so dapper. Phew.