I love checking out celebrity styles, watching to see what they are going to wear to one event or another.

There are definitely some hot and not so hot ensembles displayed over the past couple of months, and here are a few of my favorite hot or not styles.

Carrie Underwood

I cannot say enough about this look. Singer Carrie Underwood showed up at the 2008 CMT Music Awards looking like a true star.

In an eye-catching cobalt-blue Badgley Mischka mini-dress and gorgeous silver strappy Rene Caovilla sandals, she is absolutely stunning.

It was very smart of her to keep her accessories minimal, as this draws all the attention to this super sexy and elegant dress.

The vibrant color is dynamite with her blonde hair and plays up her best features.

I am not always impressed with Miss Underwood’s fashion sense but this outfit I definitely give the thumbs up to.

Mary-Kate Olsen

This was definitely one of the biggest style nots in the past week that I have seen.

I constantly hear of people talking about how the Olsen twins have fabulous style and creativity, but while Ashley at least looks half decent most of the time, Mary-Kate always seems to manage to look like a hobo.

This outfit is no different, and although the floor-length vintage Missoni dress could look great on someone else, it makes Mary-Kate look huge and uncoordinated because it floods over her tiny frame.

Oh, and I didn’t even make it to the Marc Jacobs headband yet. Please Mary-Kate, just take off this disastrous outfit!

Heidi Klum

Now here is one girl who always has style. Heidi Klum always has it going on, and she looked beautiful and glowing in a purple mini-dress designed by Project Runway finalist Rami Kashou.

Recently Heidi was declared as US Magazine’s Style Icon of the Year, and it is really no wonder why.

She is definitely a winner in this figure flattering strapless dress, but then again, could anything not be figure flattering on Heidi?

The beautiful plum color is very summery and fresh, and contrasts against her ash blonde hair.

Heidi Klum is a beautiful woman and always knows how to play up her best features, as she has done here.

Gwyneth Paltrow

The ’80s style is definitely back and is … Ah, ha, ha, ha, stayin’ alive?

Anyways, Gwyneth Paltrow, although we rarely see her out on the red carpet anymore, certainly knows how to wow us when she does appear.

Glowing in a vintage Christian Dior gown in hot pink, Gwyneth was positively stunning, pairing a cute black clutch with her black sash belt.

The outfit is a little too matchy-matchy for my liking and I think she could have kept the belt and bag black and added a little something special in the shoes, but regardless she was striking.

All she needs now is her other accessory Chris Martin and she’s good to go.

Molly Sims

Simple definitely can be sexy, as the beautiful Molly Sims shows us in her sunny Calvin Klein sheath.

The dress, which is available from the designer’s Fall 2008 Collection, looks fabulous with Molly’s golden complexion and dirty blonde hair.

She kept the accessories very minimal, wearing only a small black clutch, black nylons and mules and small hoop earrings.

Not many stars would be able to pull this look off and it would probably just come off as boring, but with Molly’s gorgeous face and body it is definitely a winner on her.