By Jen Heger - Breaking Celebrity News Legal Editor

Lindsay Lohan is telling people in her inner circle that her mother, Dina isn't concerned with daughter, Ali's sudden weight loss, Breaking Celebrity News is exclusively reporting.

Pictures depicting Ali looking skinnier than ever emerged last week, igniting controversy and concern for Lilo's little sister. Ali recently signed a modeling contract with Next Model Management.

“Dina is adamant though that Ali is just going through a very big growth spurt, and there is absolutely no cause for concern,” a source close to the situation tells Breaking Celebrity News. “If Dina thought for one moment that Ali was suffering from an eating disorder, or feeling the pressure to be thin, she would terminate Ali's modeling contract, and get her the necessary help.

“Ali is the one who has pestered her mom for years to get into the business. Dina held-off for years, but felt now the time was right for Ali to get into the business. As long as Dina isn't concerned, Lindsay isn't worried either.”

Lindsay defended her sister on Twitter: "I love how haters pick on my sister yet every runway model is just as thin! My sister is gorgeous and I'm so proud of