holds hands with her country superstar husband Keith Urban
as they leave their New York City apartment on Monday (September 8).
On Monday, the Aussie power couple watched
Switzerland's Roger Federer
wipe the floor with Spain's Tommy Robredo
at the U.S. Open, 7-5, 6-2, 6-2.
On Thursday, Federer
's quarterfinal opponent will be countryman Robin Soderling
, whom he defeated in straight sets in June's