1. For some reason I thought of Ginnifer Goodwin. She seems to be in everything these days from movies to shows (I just saw a preview for a new TV show of hers coming out in August). Tons of supporting roles but as a leading actress she's bombed (Something Borrowed).
2 and 3. Nicole Kidman and Keith Urban, maybe. Because it says "celebrity husband" rather than actor.
4.5.6. Could be anyone