Keith Urban and Nicole Kidman's girls are getting so big!

The 49-year-old actress stepped out with the couple's two daughters, Sunday Rose and Faith Margaret, in LA on Tuesday, Dec. 13 — and we can't get over how grown up the sisters look in the new pics!

nicole kidman daughters splash

Nicole with Sunday (left) and Faith (center) on Dec. 13.

Nicole and Keith, 49 — who married in June 2006 — welcomed Sunday Rose, 8, in July 2008 and Faith Margaret, 5, via surrogate in December 2010.

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The Lion star is also a mom to two older kids, daughter Isabella, 23, and son Connor, 21, whom she previously adopted with ex-husband Tom Cruise.

Click through the gallery below to see more celebrity kids then and now!