Diane Kruger did some solo shopping in NYC yesterday afternoon before reuniting with her boyfriend, Joshua Jackson, for lunch. He greeted her with a big hug and a kiss before they sat down, and Diane showed off a few of her new purchases. The duo tackled the big city meal following an exciting Monday evening out on the town together. They were among the sexy duos on the red carpet at the Costume Institute Gala, and Diane's high-slitted Jason Wu gown even ranked among your picks for best dressed at the bash. Diane and Joshua kept the good times rolling by mingling at the unofficial Met Ball afterparty at the Standard Hotel. Joshua and Diane regularly rank among the hottest couples at the annual museum event, but they look equally happy together dressed down for a casual lunch.