BROTHERS & SISTERS Season Finale Scoop!

The main storyline during the season (or series?) finale of BROTHERS & SISTERS will be Sarah and Luc's nuptials. TVGuide.com's William Keck adds the following details: "A mystery guest shows up in blue jeans to walk the bride down the aisle. The groom sings a Motown favorite, backed up by all the Walker boys. There may be another engagement. Kitty will be forced to make an extremely difficult decision." The finale will air on May 8.