Lindsay's Baby Bro Ready for His Close-Up First Pics

2/10/2013 5:45 AM PST

Lindsay Lohan's Baby Brother Pics -- Ready for His Close-Up [FIRST PHOTOS]

Lindsay Lohan's baby half-brother can look forward to a lifetime of blonde moments -- because kid's already sporting a head full of golden locks ... and TMZ has the FIRST PICS of the newest Lohan.

TMZ broke the story ... Michael's fiancee Kate Major gave birth to Landon Major Lohan on January 30 -- the same day Lindsay was sweating it out in L.A. court.

Landon was born 7 pounds 5 ounces -- and he's already got the baby act down pat ... just like his older sister.