Hilary Duff trades in the workout gear for a sexy little black dress on a trip to the cinema

PUBLISHED: 04:35 EST, 26 September 2012 | UPDATED: 06:38 EST, 26 September 2012

When in doubt, put on a little black dress, Hilary Duff must have thought.

The actress showed off her slim post-baby figure in a sexy evening dress teamed with a sparkly silver clutch and heels, as she visited the cinema in Hollywood with a friend on Tuesday.

It might be a little overdressed for a trip to the movies, but the new mother of Luca looked radiating in it nonetheless.

Movie time: Hilary left baby Luca at home as she enjoyed some girly time with her friend

It's a far cry from the fluorescent green leggings the 24-year-old was seen wearing earlier in the day.

The Gossip Girl actress has been hitting the gym hard lately in an effort to lose the baby weight, after son Luca was born in March of this year.

And it seems to have paid off. The star has been sporting a slimmer figure lately, although the criticism of her post-baby body has affected her.

Stepping out: The actress pulled out her LBD for a trip to the cinema

LBD: The actress kept her make-up minimal and lets the dress do the talking

'Obviously, I'm not where I want to be... but I'm working hard and I'm doing everything I can to lose the weight the right way,' Hilary said.

'I'm breast-feeding, so you have to be careful and not do anything too drastic.'

The young mother clearly dotes on her baby son though, as she's been enthusiastically tweeting pictures and news to her fans to keep them updated.

Last week, Hilary posted a picture of her adorable tot getting his first tooth.

'HELLO FRIENDS!!!!! Check out me teeth!!,' she tweeted, accompanied by a picture of the little boy sporting a big grin.

Gym time: The actress was spotting going for a workout earlier that day in bright green leggings

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Hilary Duff is a smart girl because she hangs around with fat ugly women , so all the men would fancy her and not the ugly fat women , LOL.

- Jamal , London, 27/9/2012 00:02

Click to rate Rating 23

She sure has a lot of baby free time!!!

- Kate , Sydney, Australia, 26/9/2012 23:29

Click to rate Rating 10

ONCE AGAIN WHY IS THE DM posting on this person..............she is less relevant than Denise Richards who is featured today, and looks nowhere near as good and Duff is what 15 years younger and has had what 3 less babies?

- Danii , New York, 26/9/2012 20:33

Click to rate Rating 43

She looks great!!

- sayit-like-itis1 , Canada, Canada, 26/9/2012 19:46

Click to rate Rating 67

Why does DM in every post use that quote of Duff "'Obviously, I'm not where I want to be..." We get the point already, besides, it's a quote from July.

- Misspoes , The Netherlands, 26/9/2012 19:09

Click to rate Rating 16

She looks beautiful!! :-)

- Me , Leeds, 26/9/2012 18:45

Click to rate Rating 64

Pregnant myself and very aware of my increasing size, it's lovely to see a 'celeb' look 'nomal' for post-baby, and struggle to lose the weight easily (although she is definitely getting there, the sensible way!). Quite right that she should be taking it slowly, especially with breast feeding, she is lucky that she is a naturaly beauty so still looks stunning even with a little extra on her.us all. Thank you Hilary for setting a realistic and good example to us all. To those calling her 'chubby', she she is no longer a Hollywood slim thing, but she's hardly fat at all!

- lozzalondon , London, 26/9/2012 17:34

Click to rate Rating 90

Hilary is lovely but that dress is shapeless and isn't sexy at all.

- Anon , London, 26/9/2012 17:17

Click to rate Rating 40

those who are saying shes over weight no she is not by any means she has a muscle body shap she is fit and healthy and a beautiful woman great role mole for young woman not to rush losing the pregnancy weight go hilary

- laura , wales, 26/9/2012 16:47

Click to rate Rating 73

This is how all you girls should look like!! :P

- Johan , Windhoek, Namibia, 26/9/2012 16:02

Click to rate Rating 79

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