Risky business! Katharine McPhee looks on verge of wardrobe malfunction as she goes braless in daring black jumpsuit for HBO's star-studded Emmys after-party 

Showing skin: Katharine McPhee showed major sideboob in a black jumpsuit as she attended the HBO Emmys Party in West Hollywood, California on Sunday 

Secret trick: The actress revealed she had taped her boobs to avoid a wardrobe malfunction

Stunning: Whitney Cummings looked red hot in a cut-out crimson dress which she paired with silver heels and matching accessories

Newly engaged Chris Hardwick and fiancee Lydia Hearst hammed it up for the cameras

Slim star: Lydia showed off her figure in a patterned strapless mini dress teamed with strappy black heels

Under armour: Kerry Washington wowed the Emmy after-party in shimmering chainmail style dress

Stunner: The 38-year-old looked gorgeous in a shimmering silver dress, which was teamed with a pair of matching silver strappy heels

Kisses: Viola Davis received a kiss on the cheek from her husband, Julius Tennon, at the HBO Emmy Party

She's a star: The 50-year-old actress won Outstanding Lead Actress in the drama category

Fancy that: Emma Roberts also made a stunning appearance at the HBO's Emmy Party in West Hollywood

Classy lady: The pretty blonde oozed glamour in a striking black gown

Fringe appeal: Katie Aselton wore a fringed navy gown as she cosied up to Mark Duplass

Flaming: Alexandra Daddario stood out in a fiery coral gown

Red hot: Arielle Kebbel dazzled in a tight, plunging scarlet dress 

Leggy display: Laverne Cox showed off her toned curves in a striking thigh-high slit gown

Classy: Anna Chlumsky opted for a cream dress with floral and netting applique for the night

Boho chic: Busy Philipps looked colourful in a floral dress and matching heels

Friends with better invites: Zoe Lister Jones looked sensationally chic in a polka dot dress and heels that oozed a retro Sixties vibe

Modern look: Mad Men actress Kiernan Shipka wore an off-the-shoulder floral dress over black pants

Funky: Jennifer Morrison showed off her taut tummy in an asymmetrical white and black blouse which she layered over a pair of slim black trousers

All the gongs! Julia Louis-Dreyfus showed off her VEEP gongs as she put on a stylish dispaly in a black ball gown alongside husband Brad Hall Mandatory

Beauty in black: Ariel Winter changed into a black gown to attend the HBO post Emmy party on Sunday

A 10: The Small screen favorite shimmered in her gown that had spaghetti straps

Game of style: Peter Dinklage showcased his swish sartorial style as he attended the party with his wife Erica

Victorious: Peter, who plays Tyrion Lannister in Game of Thrones, won the award for Outstanding Supporting Actor In A Drama Series

The HBO gang: Peter and his wife Erica mingled with some of The Leftovers stars including: Jennifer Aniston's husband Justin Theroux (centre), Carrie coon and Margaret Qualley

The stark sisters: Game of Thrones stars Sophie Turner (Sansa Stark) and Maisie Williams (Arya Stark) put on a much more loving display than their characters have ever shown towards one another

Not so faceless: The 18-year-old actress from Bristol showcased her best pout, as she flaunted her fashion credential in a pink patterned dress

Gwendoline Christie, who plays Brienne of Tarth in the fantasy epic, cut a far cry from her on-screen persona in plunging pink dress which featured a thigh-high split

The man behind the dragons: David Benihoff, the show's co-creator, was in robust form as he partied late intot eh night with his actress wife Amanda Peet

Make way: Lena Headey changed into more comfortable clothing after the Emmy win as she passed cameras

She's a Lady: Laura Carmichael oozed heaps of elegance in a floral gown

Date night delight: Damian Lewis took his wife Helen McCrory to the star-studded HBO after-party

Dressed to impress: James Cordon and wife Julia Carey made an effort on the night

Rock on: Foo Fighters rocker Dave Grohl and his wife Jordyn Blum also attended the star-studded after party

Rock 'n' roll: Marilyn Manson also headed to the star-studded bash

Doing his thing: The 46-year-old happily stopped to take a picture with Travon Free, writer for The Daily Show

Out of this world! Star Wars actor Adam Driver and his wife Joanne Tucker also made an appearance 

Lovebirds: Actors Paul Dano and Zoe Kazan looked picture perfect at the glamorous after-party

Late night outing: Morgan Walsh and Matt Walsh made sure they took part in the celebrations on Sunday 

Side by side: Jason Ritter and Melanie Lynskey headed to HBO's Official 2015 Emmy after-party together

Cooking on heat: Padma Lakshmi cut a unique and stylish figure in her gold fitted gown as she the HBO after party following the award show

She's still got it: The Indian star looked radiant as she showcased her stunning figure and curves in at the party; while the actress and model added a hint of 'old Hollywood' glamour to her look with a sweeping trail

Relaxed beauty: In the after party the star was seen reclining elegantly with friends, still manage to maintain her effortless poise and glamour

Good friends: Actor Colin Hanks (L) and musician Dave Grohl (R) enjoyed catching up

High spirits: Actresses Gwendoline Christie (L) and Queen Latifah (R) looked merry as the night went on

Kicking back: (L-R) Alan Cumming, Gwendoline Christie, and Laura Carmichael all caught up