The popular US cosmetics firm founded by Northern Ireland-born Trish McEvoy is suing a rival for trademark infringement in New York, in what's shaping up to be a bruising legal fight.
Her eponymous company is suing US firm Too Faced Cosmetics over the use of a tagline. Both companies have annual revenues of about $200m (£157m).
Trish McEvoy Ltd claims that Too Faced Cosmetics had infringed its trademark - 'The Power of Makeup', and is seeking any damages that might be awarded to be trebled.
Born in Belfast, Ms McEvoy (65) left the city at a young age to live with her grandmother in Berlin. She later moved to the United States, and founded her cosmetics business in New York in the 1970s. She had worked as a make-up artist.
Her brand is now hugely popular and sells around the world.