Britney Spears -- Feliz Cumpleaños

12/5/2010 5:15 PM PST BY TMZ STAFF
Britney Spears made good on her Twitter pledge to have a romantic weekend with boyfriend Jason Trawick -- landing in Mexico for some quality time south of the border.

If Britney gets a little color while she's there, you'll be able to kiss her tan southern Louisiana a**!