Cancer-battling Shannen Doherty flashes a bright smile as she stocks up on fresh fruit and veggies in Malibu

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Shannen Doherty didn't let a little something like cancer stop her doing her grocery run - or smiling - on Friday.

The 45-year-old beamed brightly as she left Vintage Grocers market in Malibu, California.

The actress was stocking up on plenty of fresh fruit and veggies as bolstered her system for her ongoing battle.

Not stopping me: Cancer-battling Shannen Doherty flashed a bright smile as she stocks up on fresh fruit and veggies for her fight

Her mom Rosa - who doesn't appear to have left her side since the devastating diagnosis - was once again on hand to help. 

The former Beverly Hills 90210 star looked fighting fit in flip flops and cutoff jeans and a black sheer top, protecting her newly-bald head from the sun in a pink do-rag.

While chemotherapy can lay many people out, Shannen firmly believes in staying active to 'flush the toxins out and keep blood moving'.

She proved this on Thursday by posting a video of herself working out just one day after her chemo session. 

Going strong: The former Beverly Hills 90210 star looked fighting fit in flip flops and cutoff jeans and a black sheer top, protecting her newly-bald head from the sun in a pink do-rag

Active: While chemotherapy can lay many people out, Shannen firmly believes in staying active to 'flush the toxins out and keep blood moving'

The clip started with her admitting she was 'not feeling too great' and was nauseous and 'very achy' - typical after chemotherapy.

'I'd prefer to be in bed doing nothing, but guess where I'm heading? Gonna go work out!,' Shannen said. 

She explained her motivation further in the caption.

'After chemo day. I believe that just moving helps so much in the healing process It's not always easy and sometimes I can't do it the next day but I try to make an effort to get the blood flowing and the toxins out of my body thru working out,' she wrote.

Working out: The actress shared an Instagram video on Thursday of herself headed to a workout a day after chemotherapy

Moving helps: She believes that moving after chemotherapy helps with the healing process

Pushes it: Shannen said some days are easier than others but she pushes herself to move

'Some days are easy workouts and other days I push it but the key is to MOVE!!! This is for any illness. Obviously check with your doctor. The road to recovery is paved with all sorts of different material,' she added.

Shannen recently took to Instagram to post tender snaps of her supportive husband of five years Kurt Iswarienko.

A snap on Saturday showed Shannen and Kurt together after she underwent a chemotherapy session. 

'Shaking your booty is hard work': Shannen said she felt 'way better' after the workout

'I love you mom': Later on, she spent time with her mother Rosa and said they decided to 'collapse on the couch and watch TV'

She was thankful and philosophical about her cancer battle in the caption.

'This is us now. Life has handed us an interesting card with cancer and although we would both prefer to not be faced with such a terrible disease, we must also search for the good,' she wrote.

She later in the post got a bit analytical about revelations from her cancer battle.

Husband and wife: The Beverly Hills, 90210 star on Saturday shared a snap of herself with husband Kurt Iswarienko

Throwback photo: The actress also recently posted a throwback photo from her honeymoon

'Cancer gives a clarity that is unique. I've seen friends run , I've seen strangers step up, I've seen the unwavering still unwaver and I've seen @kurtiswarienko there for it all. That's friendship. That's love.'

She has posted another snap a day earlier of the couple during their honeymoon.

Shannen had a full head of her famous raven locks and stood behind new husband Kurt in front of a herd of giraffes.

Way back: Shannen posted a photo of herself as a little girl on Wednesday after undergoing chemotherapy 

'@kurtiswarienko surprised me by taking me to South Africa. By far the best trip I've ever been on. It was enlightening, inspiring and life changing,' she declared.

'Only kurt would understand me well enough to know that this was the perfect honeymoon trip. As I said before.... I'm lucky. I married my other half, my soul mate,' Shanned added.

Doherty has been documenting her battle against cancer and is nearing the end of her chemotherapy and radiation treatment after a mastectomy in May.

She was diagnosed with breast cancer in March 2015 and it spread to her lymphatic system in 2016.

Favorite pictures: The actress in an Instagram posting on Sunday said her favorite pictures of her and Kurt are the ones they take together now