I don't often write about celebrity style, but I am making a prediction. Miss Kate Middleton, betrothed to Prince William, will get married in a wedding gown with sleeves.
In fact, I think she will wear long lace sleeves and usher in a new age in bridal wear. For well over a decade, strapless ballgowns with a big poofy skirt and tight bodice were very much a standard, something almost everyone wore. Well, it's a new decade. It's time to move forward. And celebrity weddings, especially royal ones, tend to have ripple effects.
The way I see it is, Chelsea Clinton's wedding last summer marked the end of the last big wedding ceremony on the public's radar to have the strapless ballgown style. You can't argue that she looked fantastic. But in terms of aesthetics, I felt as though a curtain was being closed.
Similarly, there was also Ivanka Trump's wedding. She had a big poofy full skirt, but do you see the lace sleeve? The material wrapped around her clavicle area as well (this was Vera Wang couture) and met just above her elbow. The emergence of a sleeve!

Nicole Richie's Marchesa had very long sleeves. I think this dress and whatever Kate Middleton ends up wearing will be the sources of inspiration for a new era in bridal gowns. I don't know why I feel so strongly about this. Rare is it that I ponder wedding dresses. Weddings are generally intimate affairs and many of the choices made regarding gowns (bridal, bridesmaid, or otherwise) are very personal. Still, if you look back over the years, wedding trends emerge with each decade that comes and goes. Remember in the 1980s, when sitting in high back wicker chairs was a popular thing to do for some reason? And grooms in head-to-toe white? When Princess Diana and Prince Charles married in 1981, the style of her gown, with the exaggerated puffy sleeves, inspired countless brides to take that style into consideration for their own special day. I think what Kate wears will have a similar effect.

I also happen to just plain old like long lace sleeves on wedding gowns. The coat that Lauren Santo Domingo wore during her wedding ceremony in a beautiful Catholic church in South America was larger than life but still had long sleeves.
It makes a gown look less prom dress-like (probably because wedding gowns may have trickle-down effects on prom gown trends), and lends an air of modesty to a very special occassion.