Green’s Dictionary of Slang

(orig. US) dressed up.

1912		D. Lowrie My Life in Prison 126: They thought they could get a start here in Californy an’ then go back all dogged up an’ cut a figger.
1934		(con. 1920s) J.T. Farrell Young Manhood in Studs Lonigan (1936) 248: He was [...] dogged out in classy clothes.
c.1943		‘Bill O. Lading’ You Chirped a Chinful!! n.p.: Dogged Up: Dressed up.