sunglasses Nicole Kidman kids car keith urban

Nicole Kidman and hubby Keith Urban packed up the girls and took them to Romp indoor play-place in Hollywood on Sunday.

The actress' one-year-old daughter Faith, with her incredibly rosy cheeks and bright red hair, held tight to mommy as they family made their way into the indoor playground. 3 1/2-year old Sunday Rose held Kidman's hand, with daddy close behind, shooting video of the trio on his cell phone.

Meanwhile, Nicole's other daughter, 19-year-old Isabella, is reportedly getting super serious with boyfriend Eddie Frencher, 23. Her adopted daughter with ex Tom Cruise met the young man through the Church of Scientology and two attended brother Connor's 17th birthday party together two weeks ago.

If and when Isabella decides to tie the knot -- with Eddie or with someone else -- do you think Nicole and Keith will attend, alongside Tom and Katie???

Here's some video of Keith arriving at LAX yesterday after he performed at the Grand Ole Opry, post vocal cord surgery ...