The origin of the colours of the cockade and the reasons for their election cannot be accurately established. Among the several versions, one states that the colours white and light blue were first adopted during the British invasions of the Río de la Plata in 1806 and 1807 by the Regiment of Patricians, the first urban militia regiment of the Río de la Plata. Supposedly, a group of ladies from Buenos Aires first wore the cockade on May 19, 1810, in a visit to then-Colonel Cornelio Saavedra, head of the regiment.