Teams 
1900-1910:
The jersey of this period was short-sleeved with no trim except for
a dark blue collar. Stockings were dark blue with red stripes and
the cap was blue with a white "P". A "PBC" monogram signifying
Pittsburgh Baseball Club was also added to the left sleeve later
in the decade.
1910-1920:
The regular collar was replaced by the short, stand-up "cadet"
style with a button collar. Pinstriped material was also
introduced. As the team nickname became more accepted,
"Pirates" was displayed in capital letters down the button lapel
(1912). The cadet-style collar soon gave way to a tapered collar
extension, but the buttonlapel remained solid dark blue with
white buttons and a "P-P" straddling the top button (1913-14).
Later in this decade, the cap had piping and also included a "P"
in white or red.
1921-1932:
The regular collar was replaced by the short, stand-up "cadet"
style with a button collar. Pinstriped material was also
introduced. As the team nickname became more accepted,
"Pirates" was displayed in capital letters down the button lapel
(1912). The cadet-style collar soon gave way to a tapered collar
extension, but the buttonlapel remained solid dark blue with
white buttons and a "P-P" straddling the top button (1913-14).
Later in this decade, the cap had piping and also included a "P"
in white or red.
1933-1937:
The Pirate uniforms brightened up considerably with added
colors, trim features and graphics. The name "Pirates" was
placed across the jersey in an arc of fancy red and blue capital
letters. Solid blue belts were included and piping trim on the
uniforms included blue and red. A red "P" was also placed on
the solid blue cap.
1939-1946:
A zipper front replaced the button-down jersey.
1948:
The team replaced the traditional blue and red with the present
day black and gold. The script "Pirates" and "Pittsburgh" was
replaced with the block lettering that you still see today. The cap
became solid black with a gold "P".
1957:
The Pirates became the second team to begin wearing sleeveless jerseys.
1970:
The Pirates became the first major league club to adopt the new
double-knit fabric uniforms, which they debuted at the first game
at the new Three Rivers Stadium. The jersey became a pullover
with no button or zipper. The pants contained a built-in sash belt.
The cap crown was mustard yellow with a black bill. Within two
years, nearly every other club was wearing a double-knit uniform.
1977-1979:
Abandoned were the traditional white and gray uniforms in
exchange for combinations of white, gold, black iand pinstriping.
The caps became black with yellow stripes. Players' last names
appear on the back of the jerseys for the first time.
1990:
A script "Pittsburgh" is added to the gray road uniform for the first
time since 1952.
2001:
With the opening of PNC Park, the club enters a "New Era of
Baseball." The team re-introduces the sleeveless jersey as part
of both the home and road uniform. The Pirates also become the
first team ever to wear a cap with a red underbill (cap worn with
the alternate home jersey only).
2007:
The club introduces a red, sleeveless jersey to be worn on selected
home dates.
