Letting her hair down! Olivia Wilde covers growing baby bump in flowing maxi dress as she joins fiance Jason Sudeikis at Big Slick charity event

Olivia Wilde showed off her relaxed pregnancy style over the weekend.

The 32-year-old actress wore a flowing maxi dress as she joined fiance Jason Sudeikis, 40, and their two-year-old son Otis for the Big Slick Red White & Bowl event in Kansas City, Missouri on Saturday.

They're in town for the Big Slick Celebrity weekend in Kansas City, Missouri, along with famous friends Paul Rudd, James Marsden, Eric Stonestreet, Will Forte, Haley Joel Osment, James Van Der Beek and Judy Greer.

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Feeling free! Pregnant actress Olivia Wilde struck a pose as she arrived at the Big Slick Block Party and Bowling event in Kansas City, Missouri on Saturday

Feeling free! Pregnant actress Olivia Wilde struck a pose as she arrived at the Big Slick Block Party and Bowling event in Kansas City, Missouri on Saturday

The 32-year-old former House star looked glowing and flashed a big smile as she arrived at the game.

Olivia went makeup free and wore white Converse sneakers on the red carpet.

She tied her bowling shirt up in a knot over her growing belly, and added over sized sunglasses for a relaxed look. 

Letting her hair down: The 32-year-old appeared to be in a great mood on the red carpet

Letting her hair down: The 32-year-old appeared to be in a great mood on the red carpet

I'm here! The former House star is expecting her second child with fiance Jason Sudeikis

I'm here! The former House star is expecting her second child with fiance Jason Sudeikis

Kick around in Olivia's classic Converse sneakers

There's nothing more classic than a pair of Converse Chuck Taylor sneakers expecially in the summertime. Just ask Olivia Wilde who donned a pair along with a free flowing maxi dress to a charity event in Kansas City, MO.

The House star is pregnant with her second child and comfort is key for the brunette beauty. So there's nothing better than loose fitting garb and flat canvas sneakers to cat around town in.

But whether or not you're with child, these kicks can be worn year round with everything from jeans to jumpsuits and even flirty little frocks.

And at just under $50, they won't put a huge dent in your wallet. Click through to Nordstrom (right) to pick up a pair now.

Or if you want to shop around before you drop your coins, check out the gallery below for styles from Vans, Superga, Sperry and Keds starting at less than $35.

* PRICES MAY NOT BE AS ADVERTISED

Jason is co-hosting the events of the Big Slick Celebrity weekend, a series of events that raise money for local Children's Mercy Hospital.

Many of the celebrities attending the weekend charity events have links to the Kansas City area. SNL vet Jason grew up in nearby town Overland City, Kansas.

Also at the charity bowling game was Modern Family star Eric Stonestreet, who grew up in Kansas City.

Relaxed style: Olivia wore a pretty maxi dress with casual Converse sneakers
Relaxed style: Olivia wore a pretty maxi dress with casual Converse sneakers

Relaxed style: Olivia wore a pretty maxi dress with casual Converse sneakers

Baby bump: The actress wore her bowling shirt tied over her pregnant belly as she joined comedian David Koechner 

Baby bump: The actress wore her bowling shirt tied over her pregnant belly as she joined comedian David Koechner 

Good sport: Olivia spent the day with some of the young patients at Children's Mercy Hospital

Good sport: Olivia spent the day with some of the young patients at Children's Mercy Hospital

Good cause: Olivia's fiance Jason took their two-year-old son Otis out on the field during the celebrity softball game on Friday, where they were joined by Daily Show vet Ron Riggle, left

Good cause: Olivia's fiance Jason took their two-year-old son Otis out on the field during the celebrity softball game on Friday, where they were joined by Daily Show vet Ron Riggle, left

Strike! Actors Judy Greer, left, and Hilarie Burton showed off their personalized bowling shirts as they arrived at the charity game
Strike! Actors Judy Greer, left, and Hilarie Burton showed off their personalized bowling shirts as they arrived at the charity game

Strike! Actors Judy Greer, left, and Hilarie Burton showed off their personalized bowling shirts as they arrived at the charity game 

Also at the bowling event was former One Tree Hill actress and TRL host Hilarie Burton.

On Friday, Jason kick off the fun with the Big Slick Star Spangled Softball Game’ at Kauffman Stadium, taking their two-year-old son Otis out onto the field.

He was joined by actor and former Daily Show correspondent Rob Riggle, as well as singer David Cook, comedy writer Robert Smigel, actor Adam Scott, former KC Royals pitcher Bret Saberhagen, singer Chris Daughtry, James Marsden, former Freaks & Geeks actor Samm Levine and comedian David Koechner.

Two thumbs up: Actor Paul Rudd went for a rugged look in a bushy beard

Two thumbs up: Actor Paul Rudd went for a rugged look in a bushy beard

Charity game: Modern Family star Eric Stonestreet, left, and former child star Haley Joel Osment were all smiles as they arrived on Saturday
Charity game: Modern Family star Eric Stonestreet, left, and former child star Haley Joel Osment were all smiles as they arrived on Saturday

Charity game: Modern Family star Eric Stonestreet, left, and former child star Haley Joel Osment were all smiles as they arrived on Saturday

Funny guy: Last Man On Earth creator and star Will Forte flashed a smile as posed on the red carpet

Funny guy: Last Man On Earth creator and star Will Forte flashed a smile as posed on the red carpet

Looking good: Actor James Marsden, left, and The Good Wife's Jeffrey Dean Morgan also showed their support for the event, which raises money for Mercy Children's Hospital in Kansas City
Looking good: Actor James Marsden, left, and The Good Wife's Jeffrey Dean Morgan also showed their support for the event, which raises money for Mercy Children's Hospital in Kansas City

Looking good: Actor James Marsden, left, and The Good Wife's Jeffrey Dean Morgan also showed their support for the event, which raises money for Mercy Children's Hospital in Kansas City

Actor Paul Rudd also attended the event, sporting a bushy beard and giving two thumbs up as he strolled down the red carpet.

Former child actor Haley Joel Osment also showed his support.

The Sixth Sense star looked relaxed as he strolled with hands in pockets down the red carpet. 

Home run: Paul caught up with a Children's Mercy Hospital patient at the celebrity softball game at Kauffman Stadium on Friday

Home run: Paul caught up with a Children's Mercy Hospital patient at the celebrity softball game at Kauffman Stadium on Friday

Loving it: From left, comedian Robert Smigel, Paul, actor Kevin Pollack, Eric, Rob and Jason with son Otis appeared to be having a blast at the softball game

Loving it: From left, comedian Robert Smigel, Paul, actor Kevin Pollack, Eric, Rob and Jason with son Otis appeared to be having a blast at the softball game

Say cheese! From left: singer David Cook, actor Adam Scott, former KC Royals pitcher Bret Saberhagen, singer Chris Daughtry, James Marsden, actor Samm Levine and comedian David Koechner snapped selfies

Say cheese! From left: singer David Cook, actor Adam Scott, former KC Royals pitcher Bret Saberhagen, singer Chris Daughtry, James Marsden, actor Samm Levine and comedian David Koechner snapped selfies

Helping hand: Actor James Van Der Beek joined Will to greet patients at Children's Mercy Hospital on Saturday

Helping hand: Actor James Van Der Beek joined Will to greet patients at Children's Mercy Hospital on Saturday

Kansas City love: Paul and Jason chatted to reporters during the event press conference on Friday

Kansas City love: Paul and Jason chatted to reporters during the event press conference on Friday

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