The 27-year-old actress was spotted running errands with her 20-year-old sibling in Los Angeles on on Monday.

The previous day, Vanessa had taken to Twitter to ask fans to pray for their dad Gregory.

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Just girls: On Monday, Vanessa Hudgens, 27, enjoyed some quality bonding time with sibling Stella Hudgens, 20, in Los Angeles

‘Hey guys. My dad isn’t doing too well. Please say a prayer for him! It would mean a lot to me.’ she tweeted.

Vanessa revealed in August that her father is battling stage four cancer, as she dedicated an award at the 2015 Industry Dance Awards to both him and her boyfriend’s late mother.

She said: ‘Last year, my boyfriend, Austin, lost his mom, Lori, to cancer, and my dad has just been recently diagnosed with stage four cancer. Let me tell you, I hate cancer. I hate cancer with every cell of my being.’

According to Entertainment Weekly, she added: ‘This award, it means a lot to me but I dedicate it to my boyfriend’s mom, Lori, my dad, and to all the families out there who are struggling with this, because it really takes a strong person and a strong family to be able to help those out who are going through this.’

‘Please say a prayer for him’: The previous day, the actress told fans that her father Greg ‘isn’t doing too well’

Battling cancer: Vanessa revealed in August that her dad has stage four cancer. She shared this photo of them together in July

Vanessa looked downcast during her outing with Stella on Monday, as she dressed down in an oversized grey sweater with the words ‘No coffee no workee,’ printed across it.

The High School Musical star also wore rolled up denim hotpants and comfortable black loaders, and accessorised with large sunglasses, a two-tone handbag and some jewellery.

Her sister Stella chose a printed grey halter-neck dress with a cut-out section across the abs.

‘No coffee no workee’: On Monday, the 26-year-old wore an oversize, grey sweater, complete with a statement message

Hard work: The Grease: Live actress displayed her dancer-toned legs in a pair of rolled, denim mini shorts

This weekend, Vanessa will showcase her acting, dancing and singing skills once again in the televised musical Grease: Live.

The gorgeous actress will play the iconic role of Rizzo, while former Big Time Rush band member Carlos PenaVega, 26, will play her love interest, Kenickie.

In an interview with People, Carlos, who’s happily married to Do You Believe? star Alexa PenaVega, 27, discussed how it ‘just didn’t feel right,’ kissing his co-star.

Casual look: Sister Stella chose a printed, halter day dress complete with a halter neckline

Looking good: They looked the perfect combination of smart casual as they strode together

Perfect pins: Vanessa made sure every inch of her lean, toned legs caught the sun

Taking the stage: Gorgeous Vanessa (pictured on January 18) will play the iconic role of Rizzo in Grease: Live, while former Big Time Rush band member Carlos PenaVega, 26, will play her love interest, Kenickie

‘So then it comes to our scene, and her and I are, like, sitting there. I started to go in, and I just didn’t feel right. So I was like, “OK, cool, so we’re not doing this,”‘ he said, before adding that he ‘just kissed her neck’ instead.

Carlos, who’s a born-again Christian, did say that the two will eventually practice the scene prior to the show.

Grease: Live will air on Fox at 7 p.m. EST, Sunday.

Real love: In an interview with People, Carlos, who’s happily married to Do You Believe? star Alexa PenaVega, 27, discussed how it ‘just didn’t feel right,’ kissing his co-star. Alexa posted this photo three weeks ago

Made for each other: Carlos, who’s a born-again Christian, did say that the two will practice the scene prior to the show. Above, he’s kissing wife Alexa in a screen grab from their wedding, which she shared on Instagram