This is the first installment of Mamamia’s Money Diaries, where we investigate what millennial women are spending their hard-earned cash on. Nothing is too outrageous or too sacred. We start this series with the most expensive city in Australia: Sydney. (Thanks to Refinery29 for the inspiration.)

Industry:Media

Age:24

Salary:$60,000 ($50,000 in full-time employment + $10,000 freelance).

Housing:Living at home with grandparents and sister. I don’t contribute to household expenses.

Regular expenses:

Spending in Sydney ain't cheap.

DAY 1:

PT is always a budget friendly option.

DAY 2:

Need some money managing tips? Kochie and Libby are here to help. Post continues after video...

DAY 3:

DAY 4:

(Image via iStock.)

DAY 5:

4.30am- Eat, sleep, gym, repeat.

6.15am- Come home to a protein shake, get ready for work and have enough time for a nutritious egg-based breakfast. Nailed it.

8am- Train to work, $5.

10.30am- Morning tea time - yoghurt from home, free.

1pm- As I nailed my morning schedule, I had enough time to pack my lunch. More leftover vegetable soup from last night (my people eat a lot of soup, apparently), and a piece of toast I scab from the work.

5pm- Getting peckish just before I leave work, grab a protein ball from the convenience store across the road, $4.50 (SUCH a rip off).

7.30pm- It's one of my best friends' birthdays, so 10 of us meet up at a Turkish place in Newtown for dinner. $45 later, I'm very satisfied.

10.10pm- Train home from dinner, $3. I think it's cheaper because it's so late.

Daily spend:$53

DAY 6: 8.30am - I have a bit of a sleep in before hitting the gym at 9am. I have a protein shake afterwards that I add spinach, celery and apple to, because I need to fill up and recover before netball this afternoon.1pm - Second netball game of the season, we got smashed. No, I don't want to talk about it. But the umpire was terrible.2.30pm - I make a lunch of scrambled eggs and proscuitto on toast. Then I pass out in my bed for a few hours.

6.30pm - I think the smell of a roast dinner stirs me from my slumber. My grandma has made veal, rice and vegetables. I scoff them down very happily as I park myself in front of the TV for the rest of the night.

Daily spend: Niente. NADA.

Food prep = the secret to saving. (Image via Instagram, @mealprepsociety)

DAY 7: 8.30am- My alarm went off an hour and a half ago, but I finally get out of bed. I pop on a bra and some pants and head to the florist to pick up the bouquets I ordered for my mum and grandma on behalf of myself and my siblings. As the eldest, I incurred all the costs. $150.

12pm- We arrive for lunch at an Italian place in the city. My grandma, my sister and myself meet my parents and brother there. My dad foots the bill, what a legend.

3pm- I spent the afternoon with my not-boyfriend-but-essentially-boyfriend (millennial relationships, am I right?) at a cafe by a bay. He pays for the coffees. When we get kicked out of the cafe, we go for a walk and hang out on the river bank.

8.30pm- I arrive home and get ready to be in bed by 9, because I'm a grandma.

Daily spend:$150.

Weekly spend:$450.28

The other big monthly costs I incur are my phone bill (around $110/month) and the regular donation program I do with World Vision ($100/month), so that would balance out the difference to mean that I spend half my monthly income.