The Star Wars creator and his new wife Mellody Hobson reportedly welcomed a daughter into the world last Friday.
This is the first biological child for Lucas and his 44-year-old spouse, whom he married earlier this year in June.
The famed director and producer also has three adopted children, Amanda, 32; Katie, 25; and Jett, 20.
His eldest daughter Amanda Lucas adopted with his first wife Marcia, and following his split with the film editor in 1983 he went on to adopt Katie and Jett as a single father.
MAONI YA FLFP
Flora Lyimo>Say'' Sasa kazi yake huyu baba ndo nini na hawa Wanawake ?? Yani ni huwa hawezi kazi au ndo hao Wanawake hawawezi kazi ya kubeba Mimba zake kwa Njia ya Uhalali na Kumzalia kwa Njia ya Uhalali? Nimejaribu kuwafuatilia lakini sijapata Picha kamili ni kwanini hajawazalisha kikawaida na kwenda ku 'Adopti ''siyo Mbaya kufanya hivyo pia,but nivizuri kuelewa pia'' mbuta Nanga'hebu asogee sogee na kule Tanzania to Adopte many kids he can'' I think Tanzania tonaruhusu RIGHT''
The couple's baby joy comes after Lucas and Ariel Investments president Mellody tied the knot earlier this year.
The pair exchanged vows at the billionaire's Skywalker Ranch in Marin County, California, in front of 200 guests including Oprah Winfrey, Robert De Niro, Glenn Close, Harrison Ford, Calista Flockhart, Quincy Jones and his daughter Rashida.
The bride wore a white dress by Peter Soronen and carried brightly coloured roses as her 'something blue.'
TUMESHIRIKI NA KUCHAMBUA KUTOKA DM''