Crown or garland
Steffi is a diminutive of Stephanie, which is the feminine form of the Greek name Stephanos. It literally refers to the laurel wreath or crown awarded to victors in ancient competitions. While often used as a nickname, it gained independent recognition as a given name in the late 20th century.
Less common today
Steffi isn't in the latest US Top 1000. It last peaked at #4,050 in 1990.
World No. 1 tennis player and 22-time Grand Slam champion
Hungarian-born film actress of the 1930s
US births per 5-year period, 1990βpresent (SSA data).