The "Gimme More" singer was shielded by security staffers after hitting up the Westfield Mall, which followed a trip through the McDonalds drive-thru.
As previously reported by GossipCenter, Britney spent the past weekend celebrating her 29th birthday with a trip to Conchas Chinas, Mexico with boyfriend Jason Trawick.
Shacking up in a $5,000 per-night villa, Miss Spears recently gushed about the trip to Us magazine, saying, "My birthday weekend away with Jason was amazing. Best birthday of my life!"