Britney Spears grabbed lunch and shopped in LA on Saturday with her boyfriend, Jason Trawick. It was a weekend all about loved ones since Brit sent a happy birthday tweet later that afternoon to her niece, Maddie Aldridge, who celebrated turning 2 with her mom, Jamie Lynn. Yesterday, it was Britney's dad, Jamie, who got the Twitter love — she wished him a happy Father's Day. Buzz Lightyear, though, was the one receiving Brit's affections earlier in the week when she attended the premiere of Toy Story 3. Britney apparently wasn't the only one interested in the movie, as the third installment of the franchise nabbed the top spot at the box office in the highest grossing debut ever for Pixar.