A creative mom has dressed her adorable tot in different Halloween costumes every day this month.

Audrey Kelly, from San Francisco, crafted her own costumes for six-month-old Sullivan Mae and posted the comic results to Instagram.

From Disney Princesses to mythical creatures, Audrey's followers have been treated to delightful snaps of baby Sully for the last 30 days.

Halloween queen: Six-month-old Sullivan Mae has worn a different costume every day during the month of October

Snow White: The adorable tot's mother, Audrey Kelly, started planning the costumes while she was still pregnant with her daughter

A little lamb: According to mom Audrey, the costumes have been a great source of fun for both her and her daughter

The new mom started planning the social media ambush while she was pregnant.

And luckily her new daughter proved the perfect model and happily posed for the camera.

Audrey, who lives with husband Brendon, said: 'When I found out I was pregnant I decided to do 31 days of Halloween.

'I wanted to think of a new way to make holidays fun. I thought of just doing a few costumes.

'I really started in September to get the ideas and get creative.

An elephant: 'I really started in September to get the ideas and get creative,' Audrey said of her process for coming up with the costumes

A sailor: While many babies might have been less than happy to be dressed up in such intricate ensembles, Sullivan looks more than happy to pose for the cameras in her costumes

A zebra: Some of the costumes are animal-themed, while others see Sullivan dressing up as well-known cartoon characters

The Little Mermaid: This costume was one of the few which required the sweet tot to don a full wig

'I wasn't sure Sully would enjoy wearing the costumes, I thought it would just be two days of Halloween.

'I would have stopped if she wasn't enjoying it but she giggled when I put the wigs on her and always poses for the photos.'

Audrey carefully picked each costume and tailored them for her daughter.

She added: 'I've always loved Halloween but when I had the baby I knew it couldn't be scary anymore, it had to be fun.

'Some of the costumes I made, and others I bought and tweaked.

A pig: While some of the costumes were put together with different pieces that Audrey collected herself, others - like this one - came ready made

A pilot and a strawberry: By day nine of the month-long challenge (left), Sullivan had her poses perfected

Her dad: For this shot, Audrey dressed her daughter up as her father, Brendon, even adding some fake tattoo sleeves to her arms

Thing 1 and Thing 2! Some of the costumes came in pairs, such as these, which were inspired by Dr Seusss

'I've made costumes before and my mom used to always make mine so I learnt from her.'

The young family have a joint costume planned for the annual holiday on Saturday - but unfortunately it's top secret.

She said: 'I don't want to give anything away.

'But we're planning on doing something for every holiday.

'People have enjoyed the photos so much and said they will be sad when it ends, so I think we continue it, somehow.'

A kangaroo: For this costume, Sullivan got to hang out with a little buddy

A clown: Sullivan looked absolutely delighted with this colorful ensemble - which came complete with a bright red nose

A bumble bee: 'I've made costumes before and my mom used to always make mine so I learnt from her,' Audrey said of her creations

Frida Kahlo: For this costume, Sullivan's mother drew a monobrow across her forehead, in the same style as the iconic Mexican painter

An astronaut: Sullivan looks like she's ready to go to infinity and beyond in this cute costume

A Greek goddess: Although Halloween was supposed to be the final day in Audrey and Sullivan's costuming extravaganza, the mom says that she has plans to continue it on afterwards

A doctor: 'People have enjoyed the photos so much and said they will be sad when it ends, so I think we continue it, somehow,' she explained

Minnie Mouse: This Disney favorite was one of the more glamorous costumes

A unicorn: Sullivan looked slightly bewildered by this mythical costume

Wednesday Adams: The youngster certainly had this Adams Family character's sullen facial expression down

A princess: But she managed to cheer herself up again in time to step into the role of a beautiful princess

A minion: The cute characters from Despicable Me look set to be one of the more popular Halloween costume options this year

Cruella de Vil: Sullivan donned yet another wig for this classic Disney character

Betsey Johnson: Taking some inspiration from the catwalks at New York Fashion Week, Sullivan paid tribute to the catwalk veteran