Heidi Montag celebrates her birthday but can she really only be 25?

Can she really only be 25 Haggard Heidi Montag celebrates quarter century

Voluptuous: Heidi Montag looked considerably curvier at her birthday party held at the Hard Rock Hotel in Las Vegas last night

Voluptuous: Heidi Montag looked considerably curvier at her birthday party held at the Hard Rock Hotel in Las Vegas last night

Old before their time: Pratt and Spencer looked aged beyond their young years

Old before their time: Pratt and Spencer looked aged beyond their young years

Not a pretty sight: Montag got stuck into her birthday celebrations with gusto

Not a pretty sight: Montag got stuck into her birthday celebrations with gusto

Taking a swig: Heidi indulged in her champagne cocktails and appeared to have had one too many

Taking a swig: Heidi indulged in her champagne cocktails and appeared to have had one too many

Get into the groove: The blonde reality star seemed to be dancing her cares away

Get into the groove: The blonde reality star seemed to be dancing her cares away

Necking it: Not content with just a glass Heidi went for the bottle

Necking it: Not content with just a glass Heidi went for the bottle

Party girl: Heidi seemed to be enjoying all the attention

Party girl: Heidi seemed to be enjoying all the attention

Look at me: Heidi seemed attention seeking while her husband sat nearby

Look at me: Heidi seemed attention seeking while her husband sat nearby

What Pratts!: Heidi and Spencer arrive at the bash

What Pratts!: Heidi and Spencer arrive at the bash

Can you hear me: Heidi seems to shout at her husband but he appears oblivious

Can you hear me: Heidi seems to shout at her husband but he appears oblivious

Whispering sweet nothings: The pair share an intimate moment

Whispering sweet nothings: The pair share an intimate moment

This one

Talented: Heidi managed to pout and text at the same time

Talented: Heidi managed to pout and text at the same time

The way she was: Fresh-faced Heidi in in LA back in 2006, before the life-altering surgery

The way she was: Fresh-faced Heidi in in LA back in 2006, before the life-altering surgery

All change: The couple in February 2008, just months after Heidi