Lunchtime Lowdown: Ashley & Bryce Join 'Twilight' Barbies; 'Iron Man 2' Surrenders to 'The Dark Knight'

• Vampire beauties Ashley Greene and Bryce Dallas Howard join Twilight Barbie Collection. (Celebuzz)

• Iron Man 2 unable to beat The Dark Knight, but pulls in $133.6 million! (MTV News)

• Sara Bareilles holds a grudge in "King of Anything" premiere. (PopEater)

• Big step for Leonardo Dicaprio — brought Bar Rafaeli to his mother's house on Mother's Day! (Just Jared)

• Reese Witherspoon cheers on her son with the help of her new man Jim Toth! (Huffington Post)