Grace Gummer and Mark Ronson are expecting their 1st baby.

instagram@gracejgummer_

Pregnant Grace Gummer expecting first baby with Mark Ronson.

instagram@gracejgummer_

Meryl Streep is about to become a grandmother once again.

instagram@gracejgummer_

On Tuesday at W Magazine's 50th anniversary party in NYC, Gummer showed off her bump while wearing a Michael Kors collection.

instagram@gracejgummer_

Grace Gummer and Mark Ronson celebrated their first wedding anniversary in August.

instagram@gracejgummer_

It is learned from the source that Mark Ronson always wanted to be a father.

instagram@gracejgummer_

Ronson and Gummer were seen wearing tan suits and a pink turtleneck.

instagram@gracejgummer_

Oscar winner Meryl Streep's little daughter Gummer is seen with a baby bump while sitting.

instagram@gracejgummer_

READ MORE

instagram@gracejgummer_