Christmas trees are lighting up everywhere, and today the sparkle comes to 555 California, for their 4th annual tree lighting with two very special guests, pop singer Natasha Bedingfield and 49ers tight end (and this year's dashing Hot 20 Under 40 cover guy) Vernon Davis. Hussle down there at 4:15 pm to get a good view of all the action.

Anyone can come down and catch Bedingfield perform Christmas songs at 5:15 pm, while at 5:35, Davis will do the honors with the enormous Christmas tree, serenaded by the Dick Bright Orchestra's holiday hymns. Get into the spirit!