“Real Housewives of Orange County” alum Alexis Bellino is marking a milestone birthday with a nip and tuck. The reality star, who will turn 50 in January, underwent a full facial rejuvenation with the goal of appearing more “youthful and zesty” as she enters her fifth decade, as she told People in an interview published Monday. The seven-hour procedure included a facelift targeting her laugh lines, brows and neck, along with an upper blepharoplasty to remove excess eyelid skin. She also had CO2 laser skin resurfacing performed to stimulate collagen production. Bellino described her recovery as “brutal,” explaining that it was a “whole…