headlines. the romantic comedy "no strings attached" took the top spot at the box office this weekend earning just $20 million. portman is riding high, a number one film, a golden globe for the movie "the black swan" she just announced that she is pregnant and that she is getting married. congratulations. last week's number one, the action comedy "the green hornet" jumped to second. and the dilemma starring vince vaughn and kevin james slipped to third not even hitting $10 million. "the king's speech" took in $9 million for fourth place, but made bigger news this weekend when it was named best picture by the peruer's guild of america. finally, speaking of royals, reports say at the insistence of prince williams, the duchess of york sara fergson will go an invite to their upcoming