Kelly Clarkson thinks she is ''too old'' to get drunk.

The 32-year-old singer - who has eight-month-old daughter River with husband Brandon Blackstock and is stepmother to his kids Savannah, 13, and eight-year-old Seth - admits she gets intoxicated quickly but tries not to do so very frequently any more.

She said: ''I've not been drunk in a very long time. It doesn't take many drinks for me. I'm more that girl who has a glass or two of red wine.

''I think I'm getting too old to get drunk. That's something you do in your 20s.''

And the 'Heartbeat Song' hitmaker admits it is easy to spot when she has drunk one glass too many.

She said: ''You can tell [I'm drunk] because my eyes get real squinty and I laugh a lot.''

Despite her love of red wine, Kelly admits it has its drawbacks.

She said: ''I'm not a real white wine drinker anymore, I'm more of a red drinker, which can be rough since your teeth get stained and I have, like, purple teeth when I'm on stage. It's not very becoming.''

However, the 'Stronger' singer likes to indulge in her favourite tipple every day.

She told heat magazine: ''I celebrate every day. I have a good old glass of red wine every day, so I'm constantly celebrating.''