Australian Senator Larissa Waters reacts as she breastfeeds her baby in the Senate Chamber at Parliament House in Canberra, Australia, May 9, 2017. AAP/Mick Tsikas/via REUTERS

An Australian senator has made history by breastfeeding her newborn baby in parliament.

Greens co-deputy leader Larissa Waters attended the Australian senate with her daughter Alia Joy and fed her during a vote on a Greens motion.

'So proud that my daughter Alia is the first baby to be breastfed in the federal Parliament! We need more #women parents in Parli,' she wrote on Twitter.

The senator campaigned for changes last year to allow new mums and dads to briefly care for their infants in the chamber.

So proud that my daughter Alia is the first baby to be breastfed in the federal Parliament! We need more #women & parents in Parli #auspol pic.twitter.com/w34nxWxG0y — Larissa Waters (@larissawaters) May 9, 2017

Here is Kirstie Marshall before she was ejected from the Vic Parliament for breastfeeding her 11-day old bub. Look how far we have come! pic.twitter.com/LrzZcIFBXq — Larissa Waters (@larissawaters) May 10, 2017

Greens colleague Sarah Hanson-Young made headlines back in 2009 when her two-year-old daughter Kora was taken from her arms and ejected from the senate chamber.

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