Christina Aguilera Encourages Fans to Celebrate Oral Sex Holiday!

Christina Aguilera tries to camouflage her baby bump while arriving at Triangle Medical Plaza with her fiance Matthew Rutler on Friday (March 21) in Beverly Hills, Calif.

This is one of the rare times that 33-year-old pregnant singer and her beau have been spotted together since announcing that they were expecting their first child together.

PHOTOS: Check out the latest pics of Christina Aguilera

“Hope you all cashed in this month on steak & BJ day…if not, celebrate tonight! :)” Christina tweeted the night before with a pic of a definition of the holiday.