Celebrity couple Will Smith and Jada Pinkett Smith have visited Tom Cruise and fiancee Katie Holmes to see their "gorgeous" baby daughter Suri.

Cruise and Holmes have baffled the media and public with their reluctance to show off their three-month-old tot, after their publicity-hungry behaviour during their engagement and courtship.

The couple have been placed under pressure by the media, who have raised questions about Suri's birth and the Batman Begins star's pregnancy.

However, rocker/actress Pinkett Smith says she and her husband have visited baby Suri twice at Cruise and Holmes' Beverly Hills, California, home.

Pinkett Smith says, "She's one of the sweetest babies I've ever met in my life. She's an absolute beauty and she's Daddy's little girl.

"She's beautiful and they're very happy and they need to be left alone.

"She's the cutest little baby. She's got a head full of black, beautiful hair."

Pinkett Smith praises 27-year-old Holmes' parenting skills, declaring, "She is a great mom and she's loving every single second of it."

Earlier this month, US TV star Leah Rimini, a Scientologist pal of Cruise, announced she had seen the "beautiful" baby. (WENN)