She’s already got a little boy with husband David Hornsby.

And Emily Deschanel may have sparked some rumours on Monday night, as she stepped out, showing off a bit of a bump.

The 37-year-old actress donned a multi-coloured dress that clung to her midsection as she attended an animal rights event at vegan restaurant Crossroads in Los Angeles.

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Eye-catching: Emily Deschanel may have sparked some rumours on Monday night, as she stepped out, showing off a bit of a bump

Bun in the oven? The 37-year-old actress donned a multi-coloured dress that clung to her midsection as she attended an animal rights event at vegan restaurant Crossroads in Los Angeles

The Bones star dressed the look up with black platform heels and was pictured standing up to speak to a cohort of people.

She spoke up at an event called The Conscientious Table: Rethinking our Food System, hosted by Farm Sanctuary, an organization devoted to ending cruelty to farm animals.

The evening featured cocktails followed by a panel discussion and dinner.

Activist: She spoke up at an event called The Conscientious Table: Rethinking our Food System, hosted by Farm Sanctuary, an organization devoted to ending cruelty to farm animals

Emily, who has been vegan for 21 years, has been named one of the organization’s board members, having already made significant contribution to the cause.

Meanwhile, the actress is raising her three-year-old son, Henry, with her husband David, 38, star of It’s Always Sunny In Philadelphia.

Henry celebrated his birthday on September 21, and the mother-of-one threw her child a party with vegan tacos, according to People. After all, her son is 99% vegan.

You go girl! Emily, who has been vegan for 21 years, has been named one of the organization's board members, having already made significant contribution to the cause

Mommy duty: Meanwhile, the actress is raising her three-year-old son, Henry, with her husband David, 38, star of It's Always Sunny In Philadelphia

And it seems having a second child may be an appealing option for her.

Emily told Fit Pregnancy in 2011: ‘I really like being pregnant. Not that there aren’t things I don’t love, but when I think about what my body is doing — creating a child — it just blows my mind.’

She added: ‘I’m in awe of the process and science. And seeing my belly move is pretty amazing: it’s like in the movie Alien.’

Meanwhile, the tenth season of her hit show Bones premiered on September 25.