Karrueche Tran is reportedly ''mortified'' by rumours Chris Brown has secretly fathered a child with another woman.

The 26-year-old model dumped the 'Loyal' hitmaker earlier this week following speculation he has a nine-month-old daughter and, although the brunette beauty is stunned and hurt by the reports, she's trying to move on with her life and focus on herself.

A source told PEOPLE.com: ''She was hanging out with her friends, casually drinking cocktails and dancing. She was in amazing spirits. She is completely mortified by the situation, she is honestly trying to leave it behind her and move on with her life. She's seeing it as an opportunity to start fresh.''

However, Chris, 25, is reportedly desperate to win back Karrueche, whom he has had an on-off romance with since 2011, and has been trying to reach out to her since the news broke.

The insider explained: ''Chris is still trying to get ahold of her and is calling and texting nonstop.

''She's not answering and doesn't have any plans to in the near future. She doesn't want any part of the drama.''

It is believed Chris hooked up with their mutual friend, Nia Amey, 31, while he and Karrueche were on a break and he is now allegedly keen to be a part of his daughter Royalty's life.

However, he is yet to comment on the claims.