The West Chelsea starchitecture district has seen a lot of big buys, but not necessarily from the biggest names. All that's about to change! The Post's Jennifer Gould Keil reports that Nicole Kidman and husband Keith Urban have picked up one of the penthouses at 200 Eleventh Avenue. Kidman and Urban paid $10 million for the penthouse, which was listed for $12.5 million. They'll also get access to the building's Sky Garage, an automatic car elevator that might be a fun place to film a musical number for a future Kidman movie.