Defending champions Australia breezed to their record fifth ICC Women's T20 World Cup title, outclassing India by 85 runs in the summit clash at the MCG on Sunday.

Opting to bat, Australia rode on blistering half-centuries by openers Alyssa Healy (75) and Beth Mooney (78 not out) to post 184 for four before their bowlers, led by Megan Schutt (4/18) and Jess Jonassen (3/20), put up a disciplined effort to win their fifth title.

Chasing a challenging target, India, featuring in their maiden final of the tournament, couldn't handle the pressure and were bundled out for 99 in 19.1 overs.

India suffered a batting collapse as the top order of teen sensation Shafali Verma (2), Smriti Mandhana (11), Jemimah Rodrigues (0) and skipper Harmanpreet Kaur (4) departed inside the first six overs.

To add to India's woes, wicket-keeper Taniya Bhatia retired hurt in the second over after getting hit on her helmet of the bowling of left-arm spinner Jess Jonassen.

Deepti Sharma (33), Veda Krishnamurthy (19) and concussion substitute Richa Ghosh (14) tried to fight back but the Australian bowlers struck at regular intervals to choke India.

Brief Scores:

Australia: 184 for 4 in 20 overs (Beth Mooney 78 not out, Alyssa Healy 75; Deepti Sharma 2/38)

India: 99 all out in 19.1 overs (Deepti Sharma 33, Veda Krishnamurthy 19; Megan Schutt 3/18.)