Kylie Jenner takes the plunge in VERY revealing dress attending sister Kendall's 818 Tequila party

Kylie Jenner holds hands with Stormi, four, at investor party for sister Kendall's tequila brand 818

See Kim Kardashian, Kylie Jenner and More Step Out to Support Kendall Jenner's 818 Tequila Event

Kim Kardashian joins sisters Khloe and Kylie Jenner at an 818 Tequila investors event in LA