[16] She grew up in various countries as her parents worked with the Indian foreign service, eventually graduating from Maitreyi College, Delhi University and moving to Mumbai, where she now lives.

Agarwal previously was a regular contributor to radio shows, including a weekly call-in with the BBC Asia Network.

[18] MissMalini.com was founded as a hobby blog in 2008, as an extension to the gossip column Agarwal had been writing on the side for many years, with Mumbai tabloid Mid-Day.

[19] The blog draws inspiration from international sites such as PerezHilton and PopSugar covering all aspects of Bollywood and celebrity life.

[23][non-primary source needed] Agarwal is also related with her show "Inside access with Miss Malini" where she meets several celebrities and does fun stuff together.

Agarwal and her blog missmalini.com are regularly featured in leading digital and print fashion and lifestyle publications, including Elle,[24][25] Cosmopolitan,[26] Harper's Bazaar,[27] Grazia,[28] Femina (India),[29] and Glamrs.com[30] among others.

The calendar showcased 12 content creators and influencers across various domains, such as Ranveer Allahbadia, Faye D'Souza, Be YouNick, Malini Agarwal, Sushant Divgikar, Pooja Dhingra, CarryMinati, Masoom Minawalla, Mr Faisu, Mrunal Panchal, Melvin Louis, and Prajakta Koli.

[34] In July 2022, MissMalini, in partnership with the Good Creator Club and The British Brow Bar, hosted the 'Boss Lady' dinner event in Mumbai, attended by Naiyya Saggi, Aahana Kumra, Sherry Shroff, Preeta Sukhtankar, Anusha Dandekar, Radhika Karle, Sunila Duggal, Shereen Love Bug, Shruti Tejwani, and more.

The second episode, hosted by Malini Agarwal at All Saints Mumbai on January 15, featured special guest actor Aparshakti Khurana.