Emmys 2012: Heidi Klum gets tipsy on champagne... as beau Martin Kristen is left playing nanny to her children

PUBLISHED: 19:20 EST, 23 September 2012 | UPDATED: 02:01 EST, 24 September 2012

Heidi Klum may have embarked on a new romance with her bodyguard, but she is certainly no damsel in distress when it comes to faffing around in the honeymoon period.

Instead, the German-born supermodel arrived at the Emmys on Sunday flying solo, leaving boyfriend Martin Kristen to play nanny to two of her four children, looking after Leni, eight, and Johan, five.

The 39-year-old happily posed outside the Nokia Theatre alone, looking stunning in a plunging sea foam coloured Alexandre Vauthier designed gown with a daring split to the thigh.

Perfect pins: Heidi Klum looked stunning in her Alexandre Vauthier gown at the Emmy Awards on Sunday night

Steady there! Heidi looked a little wobbly as she tried to take a snap on her iPhone, while partner Martin looked after her children

Steady there! Heidi looked a little wobbly using her iPhone, while partner Martin looked after her childr! en

And as her former security guard-turned-lover took on the role of stepfather, Heidi didn't hold back as she sipped champagne and looked a little wobbly while trying to take a picture on her iPhone.

Luckily, Heidi didn't trip on the floaty gown which trailed at her feet, as her long toned legs helped her to keep balance in a pair of strappy Charlotte Olympia heels.

Her shoulder-length blonde hair was teased into soft curls and subtle make-up completed the look, along with Lorraine Schwart earrings.

Heidi missed out on a nomination for the Outstanding Host for a Reality Programme category this year, but her show Project Runway was nominated for Outstanding Reality-Competition Programme.

Someone's going to have a hangover! Heidi looked rather pleased with her giant champagne flute

Perfectly toned: The German supermodel's outfit flattered her svelte figure and slim legs

After she lost out to The Amazing Race, Heidi tweeted: 'Congratulations @AmazingRace_CBS on your win! Tough competition at the #Emmys this year! We'll get it next year @ProjectRunway!

'It takes endurance to lose 8 times! Go @ProjectRunway. Still an honor to be nominated! #Emmys'.

The television personality admitted for the first time this month ! that she and Kristen were seeing each other, although did stop short of calling the romance a 'relationship' during the Katie Couric interview.

Heidi explained on Couric's self-titled talk show that her romance with Martin had 'just started', after she was quizzed over whether she was in a 'proper relationship'.

She said: 'I don't even know if I can call it that. I don't know.'

Stepfather-to-be? Leni and Johan were treated to a stroll in Brentwood while their mother partied

Show off! Heidi tweeted this picture with the caption: 'In the limo on the way over to the #Emmys! So happy this day has finally come.'

Show off! Heidi tweeted this snap, saying: 'In the limo on the way to the #Emmys! So happy this day has come'

Klum then elaborated on her friendship with Martin, whom she has known for four years.

'Hes cared for our entire family, mostly for our four children, helped us tremendously,' she said.

Obviously confident with the direction they are heading in, Heidi trusted him with her children and was happy to venture out alone to the star-studded event.

Before the ceremony, she tweeted: 'In the limo on the way over to the #Emmys! So happy this day has finally come. Go @ProjectRunway!' she wrote on her Twitter page, before the ceremony'