08/03/2012 09:02 GMT | Updated 22/05/2015 06:12 BST

SJP Totally Upstaged By Christina Hendricks' Cleavage

Sarah Jessica Parker and Christina Hendricks We were going to write about Sarah Jessica Parker and the umpteenth red carpet dress from her global I Don't Know How She Does It promo trek. And then we saw her standing next to co-star Christina Hendricks.

SJP totally upstaged by Christina Hendricks' cleavage SJP fights the gravitational pull of Christina's mighty chest. Photo: Getty

Now, as you may have noticed, Christina's breasts are the subject of many a red carpet conversation. If these pictures are anything to go by, they are also bigger than Sarah Jessica Parker's head. We should know - we measured them with a ruler and everything.

We have no idea how much underwiring her Vivienne Westwood dress actually involves but kudos to the designer for knowing how to keep impressive bosoms in check on the red carpet. No wonder Christina is such a fan.

SJP played it safe and kept her own cleavage firmly under wraps with a figure hugging Antonio Berardi crochet dress.

For more SJP style moments (sans red carpet rivals) check out the gallery below:

And for a red carpet chat with the leading lady, hit play on the video below: