Robin Tunney introduces baby Colette on Instagram with tender video of son Oscar singing to sister

Robin Tunney introduced her new baby daughter via Instagram on Thursday with a tender video featuring her young son Oscar holding his sibling and singing to her.

'We are thrilled to introduce you to Colette Kathleen. Oscar is now a big brother. I gave birth January 8th and our hearts have gotten bigger whilst our rest has shrunken considerably,' Robin, 47, wrote in the caption for her roughly 221,000 followers.

She added: 'This firecracker came out with a thick head of strawberry blonde hair, ready to take over the world. #newborn #babygirl'.

New addition: Robin Tunney revealed on Instagram on Thursday that she gave birth earlier this month to her second child Colette Kathleen

New addition: Robin Tunney revealed on Instagram on Thursday that she gave birth earlier this month to her second child Colette Kathleen

The sweet video showed showed three-year-old son Oscar holding his sister who was swaddled up on his lap.

'Do you want to sing her a song?,' Robin whispered.

Oscar then sang a soft rendition of Rock-A-Bye-Baby to his little sister.

Robin and her interior designer fiance Nicky Marmet welcomed Oscar in June 2016. 

Tender moment: The 47-year-old actress shared a tender video of her three-year-old son Oscar doting on his new baby sister

Tender moment: The 47-year-old actress shared a tender video of her three-year-old son Oscar doting on his new baby sister

Soft song: Robin asked Oscar in a whisper if he wanted to sing to his sister and offered a soft rendition of Rock-A-Bye-Baby

Soft song: Robin asked Oscar in a whisper if he wanted to sing to his sister and offered a soft rendition of Rock-A-Bye-Baby

Big brother: Oscar became a big brother when Robin gave birth to Colette on January 8th

Big brother: Oscar became a big brother when Robin gave birth to Colette on January 8th

Fan favorite: Robin, shown in February 2018 in Pasadena, California, made her TV and film debut in 1992

Fan favorite: Robin, shown in February 2018 in Pasadena, California, made her TV and film debut in 1992

Nicky and Robin got engaged on Christmas Day in 2012 while on vacation in Rio de Janeiro.

Robin previously married director Bob Gosse, 57, in 1995, but they separated in late 2002 and divorced in 2006.

She also was engaged to Australian writer and director Andrew Dominik, 52, from 2009 to 2010.

Family outing: Nicky Marmet, Robin and Oscar are shown in November 2018 in Los Angeles

Family outing: Nicky Marmet, Robin and Oscar are shown in November 2018 in Los Angeles

Robin can next be seen on the big screen in the upcoming drama Horse Girl starring Alison Brie, 37.

Horse Girl will have its world premiere Monday at the Sundance Film Festival ahead of its scheduled release February 7 on Netflix.

Robin made her film debut in the 1992 comedy Encino Man and her movie credits include the comedy-drama Cherish, Hollywoodland and Looking Glass.

She also starred in the TV series The Mentalist as Teresa Lisbon from 2008 to 2015.

Comedy drama: Robin is shown in a still from the 2002 comedy-drama Cherish

Comedy drama: Robin is shown in a still from the 2002 comedy-drama Cherish

 

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