JENNIFER & BRAD UNDERCOVER IN A WINTER WONDERLAND

Brad Pitt and Jennifer Aniston recently went on vacation to Yosemite National Park to celebrate Brad’s 38th birthday.

Glamour and glitz suffered a meltdown as the lovebirds frolicked in the snow with family and friends in honor of Brad’s special occasion, December 18. They had a mountain of fun, roughing it for four days — snuggling in their cozy bungalow, lugging their own groceries, and even riding a public shuttle bus.

Jennifer, 32, is looking forward to starting a family and the romantic solitude set the perfect scene for an avalanche of love.

The lovely lady enhanced the mood with flower power — giving Brad a bedroom filled with lilacs for his birthday — plus a $100,000 jeweled platinum watch.

The “Friends” beauty and the “Ocean’s 11” star drove Jennifer’s Range Rover to their mountain love nest four hours north of Los Angeles. They arrived on December 17 and returned home to TinselTown on December 20 — logging more snow time than the Abominable Snowman.

To see the exclusive pictures of Jennifer and Brad frolicking in the snow, pick up a copy of The ENQUIRER — on sale now at newsstands everywhere.