Kakkar's first release of 2018 was Yo Yo Honey Singh's "Chhote Chhote Peg" from Sonu Ke Titu Ki Sweety, a remake of the Anand Raj Anand-composition "Tote Tote Ho Gaya" from Bichhoo (2000). This was followed by Bagchi's recreation of "Aashiq Banaya Apne" included in the soundtrack album of Hate Story 4, originally performed by Himesh Reshamiyya and Shreya Ghoshal. The duo collaborated on five other projects, from which "Dilbar" from Satyameva Jayate and "Aankh Maarey" from Simmba became popular with music listeners, both songs reaching the list of most-viewed Indian videos on YouTube and the former being the first Indian song to reach number three on the Billboard YouTube Music Chart. Apart from rendering the folk pop song "Dholida" from Loveyatri alongside Udit Narayan and Palak Muchhal, Kakkar performed a traditional-themed-contemporary Punjabi track, "Bhangra Da Sajda" from Veere Di Wedding, composed and co-sung by Shashwat Sachdev. The trend continued with the item song "Gali Gali" included in the Hindi-dubbed version of the Kannada film K.G.F: Chapter 1. During the year, she appeared as a judge alongside Anu Malik and Vishal Dadlani in the tenth season of the Indian television music competition, Indian Idol.
