Olivia Munn shares sweet exchange with two-year-old son Malcolm Hiệp in 44th birthday video amid breast cancer battle

As she celebrates another trip around the sun, Olivia Munn is enjoying the little things in life.

The Newsroom alum marked her 44th birthday on Wednesday with a sweet video of her morning exchange with two-year-old son Malcolm Hiệp after the family had a backyard campout.

'What a year,' Munn captioned the post. 'Thank you for all the birthday wishes!!!'

She recorded a video from inside a tent as she was interrupted by Malcolm's sweet off-camera voice.

'I'm spending my birthday morning in a tent,' Munn began before Malcolm exclaimed, 'Happy birthday, Mommy!'

Munn was all smiles as she responded, 'Oh my gosh! Thank you so much. You're the sweetest. Can you say, "I love you, Mama"?'

'I love you so much... can I go inside the house and watch Red Panda?" the toddler then asked as Munn smiled and gave him permission.

The birthday girl's partner John Mulaney could be heard laughing in the background.

Her post comes after a big year that includes possible wedding bells as Mulaney, 41, previously shared a since-deleted photo that appeared to show a gold wedding band on his ring finger. 

Munn revealed in March that she was diagnosed with breast cancer after undergoing four surgeries, including a double mastectomy. 

The Predator actress' cancer treatment put her into a medically induced menopause.

She also revealed that she's frozen her eggs on three different occasions as she and Mulaney 'aren't done growing our family.'

Munn said 'one of the hardest things' amid her cancer battle has been not being able to pick up Malcolm after her double mastectomy.   

But she assured People: 'I'm finding more energy and he's happy, so it makes me happy.'

'When I'm with Malcolm, it's really the only time your brain doesn't think about that you're sick,' Munn explained.

'I'm just so happy with him. I'm just so happy in life. I mean, he's just the most fun little person.'

Munn continued: 'He's so communicative and fun and laughs so much. And it really puts a lot of stuff into perspective.

'Because if my body changes, I'm still his mom. If I have hot flashes, I'm still his mom. If I lose my hair, I'm still his mom,' added Munn. 'That's what really matters to me, I get to be here for him.'