By RATP :
There are many Metro stations close by: Porte Maillot (line 1), Ternes (line 2), Charles de Gaulle Étoile (lines 1, 2, 6) or Pereire (line 3).
The closest RER station is Porte Maillot (RER C).
For more public travel information, visit the RATP site in English.
By bus :
The closest bus stops are: Pereire or Porte Maillot (line 43) or Porte de Villiers (PC 1, PC 3).
By velib' :
There are many stations close by. For information on this bicycle service go to the Velib Paris Website.
By car :
Parking is never easy in Paris, but Sundays are slightly easier than weekdays. There is often parking available near the church along Rue Guersant. Should you wish to park underground, here is a link to the underground parking.