Los Angeles - Kylie Jenner "hates" living in Kendall Jenner's shadow.
The 17-year-old reality TV star reportedly finds it frustrating that her 19-year-old sister - who is a successful fashion model - is doing so well.
Although the brunette beauty recently launched her own hair extension line, she still feels envious of Kendall - with whom she stars on Keeping Up With The Kardashians - and just wants to do her "own thing".
A source told RadarOnline.com: 'Kylie is always going to be playing second fiddle, and she absolutely hates it."
The pair are said to have clashed while launching their new range of summer clothing for PacSun and Kylie is desperate to make herself a name in her own right, away from her famous family.
Our all-new summer collection is here, get it now at @PacSun http://t.co/PwmRmiqE0Q #kandk4pacsun pic.twitter.com/o3qC2Q91h7
— Kylie Jenner (@KylieJenner) May 16, 2015
The insider added: "Kylie is just trying to do her own thing right now and develop a brand for herself that will outlast Kendall's minute of fame."