The Glee actress dressed her mum in a floor-length halterneck black gown to support the launch of the Giuseppe Zanotti Beverly Hills store on Tuesday, 14 April.
Naya - who played Santana in Glee - is expecting her first child with husband Ryan Dorsey later this year.
They announced the pregnancy in February, six months after marrying at a secret ceremony in Cabo San Lucas, Mexico.
On Monday night, Naya joined actor Ryan at the Justified finale party in Los Angeles.
Check out some of the best maternity fashion below: