The actress tied the knot with her French partner in a discreet wedding ceremony, after managing to escape the glare of the world's media.
But she was happy to flash her sparkler as she walked through LAX airport in LA on Tuesday with her new hubby and daughter Nahla in tow.
According to Us Weekly, the pair married in a civil service at Chateau des Conde in the Vallery region, before a religious ceremony, followed by a party for 60 guests.
The 'X-Men' star is currently pregnant with her second child - her first with Olivier.
Halle is already a mum to five-year-old Nahla from her relationship with Gabriel Aubry. She has been at war with her ex over custody of their daughter with a violent fight even breaking out between Gabriel and Olivier last year.
However, Nahla is looking forward to becoming a big sister, with Halle recently telling US chat show host Wendy Williams: "Every night, we do our prayers and she says, 'God, please bring me a bunk bed and a baby sister.' And I say, 'I can do one of those things, I know for sure. The other one, we've got to keep praying on.'"