Harley Quinn Smith, 18, flaunts taut tummy at LA bash... as her father Kevin announces he's shed 20lbs since his heart attack

In her first red carpet appearance since her father Kevin Smith's heart attack, Harley Quinn Smith flashed a smile and her taut tummy at Hollywood hotspot Highlight Room on Wednesday night.

The 18-year-old actress hit up the BooHoo Block Party in a black cropped T-shirt, bizarre split-leg trousers with pink-neon piping, and matching stilettos.

Hairstylist and make-up artist Emily Dawn applied pink glitter shadow on the Archer School for Girls grad and she coiffed Harley's curly brunette bob for the Zendaya bash.

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Happy and relieved: In her first red carpet appearance since her father Kevin Smith's heart attack, Harley Quinn Smith flashed a smile and her taut tummy at Hollywood hotspot Highlight Room on Wednesday night

Happy and relieved: In her first red carpet appearance since her father Kevin Smith's heart attack, Harley Quinn Smith flashed a smile and her taut tummy at Hollywood hotspot Highlight Room on Wednesday night

SWV fan: The 18-year-old actress hit up the BooHoo Block Party in a black cropped T-shirt, bizarre split-leg trousers with pink-neon piping, and matching stilettos

SWV fan: The 18-year-old actress hit up the BooHoo Block Party in a black cropped T-shirt, bizarre split-leg trousers with pink-neon piping, and matching stilettos

Smith called her 47-year-old father's health scare in Glendale on February 25 'the most terrifying experience of my life.'

'I've always thought of my dad as this untouchable force of energy, never defeated when knocked down, always able to get back up again, so I never thought in a million years that anything like this would happen to him,' the Jersey-born, Cali-raised starlet wrote on March 1.

'My dad is a godd*** force to be reckoned with and although I'm thankful for him everyday, this is just a real reminder of how insanely lucky I am to have him.'

The Comic Book Men star - who 'had 100 percent blockage of my LAD artery' - announced Wednesday that he's shed 20lbs in 13 days due to his cardiologist-ordered vegan diet. 

'I've always thought of my dad as this untouchable': Smith called her 47-year-old father's health scare in Glendale on February 25 'the most terrifying experience of my life'

'I've always thought of my dad as this untouchable': Smith called her 47-year-old father's health scare in Glendale on February 25 'the most terrifying experience of my life'

'30 more to go!' The Comic Book Men star - who 'had 100 percent blockage of my LAD artery' -announced Wednesday that he's shed 20lbs due to his cardiologist-ordered vegan diet

'30 more to go!' The Comic Book Men star - who 'had 100 percent blockage of my LAD artery' -announced Wednesday that he's shed 20lbs due to his cardiologist-ordered vegan diet

'No more animal-related products. My kid is thrilled because she's a vegan. She's like, "Welcome home brother!"' Kevin - who weighed 400lbs in 2008 - revealed on his Hollywood Babble-On podcast Saturday.

'I feel fantastic! I have more energy than I've had in f***ing years. Everything working f***ing better...I'll never eat the way I used to.'

Smith - who lost his father Donald to a heart attack in 2003 - is following illusionist Penn Jillette's mono diet from his 2016 cookbook Presto!: How I Made Over 100 Pounds Disappear.

The Independent Spirit Award winner noted: 'This doesn't come from a personal philosophy, this comes from an "I have to." I don't know if I call myself a vegan, maybe a non-animal eater. The program is so far manageable.'  

Kevin - who weighed 400lbs in 2008 - revealed on his Hollywood Babble-On podcast Saturday: 'No more animal-related products. My kid is thrilled because she's a vegan. She's like, "Welcome home brother!" I feel fantastic!'

Kevin - who weighed 400lbs in 2008 - revealed on his Hollywood Babble-On podcast Saturday: 'No more animal-related products. My kid is thrilled because she's a vegan. She's like, "Welcome home brother!" I feel fantastic!'

'I'll never eat the way I used to': Smith - who lost his father Donald to a heart attack in 2003 - is following illusionist Penn Jillette's mono diet from his 2016 cookbook Presto!

'I'll never eat the way I used to': Smith - who lost his father Donald to a heart attack in 2003 - is following illusionist Penn Jillette's mono diet from his 2016 cookbook Presto!

The Flash guest director will now get to celebrate his 19th wedding anniversary on April 25 with wife Jennifer Schwalbach.

Kevin will next take his Hollywood Babble-On podcast to the Hollywood Improv's Main Room alongside co-host Ralph Garman this Saturday.

And the nepotistically-privileged socialite has acted in several of Smith's films - Jay and Silent Bob Strike Back (2001), Clerks II (2006), Tusk (2014), Holidays (2016), and Yoga Hosers (2016).

Missing from the Supergirl guest star's side on Wednesday was her boyfriend of over four years - Corey - who's attending college in Seattle.

June 20 family portrait: The Flash guest director will now get to celebrate his 19th wedding anniversary on April 25 with wife Jennifer Schwalbach (L)

June 20 family portrait: The Flash guest director will now get to celebrate his 19th wedding anniversary on April 25 with wife Jennifer Schwalbach (L)

Three days away! Kevin will next take his Hollywood Babble-On podcast to the Hollywood Improv's Main Room alongside co-host Ralph Garman this Saturday

Three days away! Kevin will next take his Hollywood Babble-On podcast to the Hollywood Improv's Main Room alongside co-host Ralph Garman this Saturday

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