Bumping along! Holly Madison shows off her pregnant figure in a clinging black dress as she heads out in Los Angeles

When in doubt about what to wear, a little black dress is always the answer.

And for Holly Madison, it proved the perfect choice for a busy day running errands.

The reality star, who is preparing to welcome her second child, was spotted out in Los Angeles on Tuesday.

Bumping along! Holly Madison shows off her pregnant figure in a clinging black dress as she heads out in Los Angeles on Tuesday

Bumping along! Holly Madison shows off her pregnant figure in a clinging black dress as she heads out in Los Angeles on Tuesday

The 36-year-old's LBD clung to her figure, showing off her growing bump.

The flattering maternity style had short sleeves and a scoop neckline.

Holly teamed the dress with leggings and a sensible pair of sturdy boots. Her blonde hair was tied back in a ponytail, and a pair of sunglasses shaded her eyes.

Holly and her husband Pasquale Rotella, who founded Insomniac events, are expecting their second child in August.

Baby on board: The 36-year-old's LBD clung to her figure, showing off her growing bump

Baby on board: The 36-year-old's LBD clung to her figure, showing off her growing bump

Perfect choice: The flattering maternity style had short sleeves and a scoop neckline

Perfect choice: The flattering maternity style had short sleeves and a scoop neckline

The couple, who tied the knot in 2013 in a ceremony at DisneyLand, also have a three-year-old daughter, Rainbow Aurora. 

Holly is currently promoting her second memoir The Vegas Diaries, which she released last month.

The new book gives the inside story of her life as one of Playboy boss Hugh Hefner's Girls Next Door, this time focusing on their Las Vegas escapades rather than their lives at the Playboy Mansion in Los Angeles, as her first memoir Down the Rabbit Hole did.

Both tell-alls dish about the things that E! couldn't show in the reality series that ran from 2005 to 2009. 

So cute: Holly posted an Instagram this week of her and daughter Rainbow's matching Burberry boots

So cute: Holly posted an Instagram this week of her and daughter Rainbow's matching Burberry boots

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