Kacy Catanzaro made headlines — and history — when she became the first woman to advance to the finals [1] on the popular TV competition show American Ninja Warrior. At five feet tall and 100 pounds, Kacy has proven that strength comes in all sizes and has quickly become a source of fitness inspiration [2] to men and women everywhere. The New Jersey native and former gymnast is coached by her boyfriend (and fellow American Ninja Warrior competitor), Brent Steffensen, and frequently takes to social media [3] to share sweet PDA pictures, workout tips, and, of course, envy-inducing ab photos. We've rounded up Kacy's hottest snaps here; scroll through to see them all now.

Source: Instagram user kacycatanzaro [4]

Source: Instagram user kacycatanzaro [5]

Source: Instagram user kacycatanzaro [6]

Source: Instagram user kacycatanzaro [7]

Source: Instagram user kacycatanzaro [8]

Source: Instagram user kacycatanzaro [9]

Source: Instagram user kacycatanzaro [10]

Source: Instagram user kacycatanzaro [11]

Source: Instagram user kacycatanzaro [12]

Source: Instagram user kacycatanzaro [13]

Source: Instagram user kacycatanzaro [14]