Today was an amazingly sunny and warm day in San Francisco, the perfect weather for many activities in the city, in the park, on the beach.

The blue dress
Some also thought it was the perfect weather to get married.

Promise
There are few locations in San Francisco that equal the Exploratorium as a fine place for such a ceremony; of course it depends on personal taste (and money I guess), but for these folks, the place was just right.

Party
And I tend to agree :-)