Lingerie changed a lot in the past 100 years.
In 1915 the most common lingerie was modest and quite natural and it became more feminine 10 years later. In 1939 feminine was left behind for the sake of sexy and seductive. It got sexier in the following years and became very flirty in 1955.
In 1965 lingerie became even more rebellious only to cover the whole body in 1975 when long gowns were fashionable. Then in 1985 the underwear became more fit and leggy, and went back to being sporty but hot in 1995.
In the 2000s, specifically in 2005, fashion was girlish again like it was in the 1930s. As for how lingeries looks like now… it’s up to you to find out.
Watch how lingerie evolved over the past 100 years in this video by Mode.