Lululemon’s stock is on pace for one of its biggest routs in history after the athleisure maker warned that tariffs will dent its profit.

Lululemon’s stock were set to tumble Friday, after the athleisure-wear maker cut its full-year profit outlook and offered a second-quarter forecast that came up short of Wall Street’s expectations.

Apparel maker’s stock falls nearly 20% after company lowers its earnings forecast, citing trade war and a pullback in consumer spending.