They said she couldn’t do it, and the naysayers were right.

Actress-turned-lifestyle blogger Gwyneth Paltrow has failed a charity challenge to survive on $29 worth of food stamps for an entire week.

• Gwyneth Paltrow to live on $29 for one week
• Need advice? The gospel according to Gwyneth

Paltrow, 42, shared the challenge with her two million Twitter followers last week, posting a snap of her grocery haul which was criticised for being small and frivolous.

The actress’s normally-lavish diet precedes her, and costs a reported $300 a day.

This is what $29 gets you at the grocery store—what families on SNAP (i.e. food stamps) have to live on for a week. pic.twitter.com/OZMPA3nxij

— Gwyneth Paltrow (@GwynethPaltrow) April 9, 2015

In a post on her blog Goop on Friday morning, Paltrow admitted to only lasting four days.

“As I suspected, we only made it through about four days, when I personally broke and had some chicken and fresh vegetables (and in full transparency, half a bag of black licorice).”

Paltrow gave herself a ‘C minus’ for the challenge, which aims to lobby the US government to strengthen its food stamp program.

“My perspective has been forever altered by how difficult it was to eat wholesome, nutritious food on that budget, even for just a few days—a challenge that 47 million Americans face every day, week, and year.”

She said she also discovered how easy it was to live off items like rice.

“A few takeaways from the week were that vegetarian staples liked dried beans and rice go a long way—and we were able to come up with a few recipes on a super tight budget.”

While she insisted her mission wasn’t to get “everyone eat organic food from some high horse in the sky”, Twitter users lampooned her for being out of touch for buying limes instead of staples like bread.

@GwynethPaltrow @conkc2 No, Gwyneth. Those with $29 to spend buy a loaf of bread, milk, potatoes, beans, rice, pasta, and sauce. On sale. — Nied’s Dead Horse (@mflynny) April 11, 2015

Well, you certainly taught a valuable lesson. Hollywood elite are disconnected from reality more than previously thought. @GwynethPaltrow — eric (@eriContrarian) April 11, 2015

@GwynethPaltrow you’re not a very good shopper. $29 can get you way more than that. Limes? Really? — KJack (@DrKC4) April 11, 2015

@chrisanddale @GwynethPaltrow garlic, parsley, avocado…just the essentials. — L (@OrwellForks) April 11, 2015

.@GwynethPaltrow I don’t know if I did this right but this is what $29 got ME at my grocery store… pic.twitter.com/fJRAWw5xAU — Derik Boik (@DerikBoik) April 11, 2015