Look who went all out for October 31st! Hot couple Kate Beckinsale and Len Wiseman decided to hide their hotness for Halloween last night, dressing up as Frankenstein and his bride. Talk about fierce! Heidi Klum has some competition...

And check out Kate pre-Halloween festivities buying her costume in West Hollywood:

Looking gorge as ever!

Hot husband? Check! Gorgeous daughter! Check! Cute dogs, cute oufit and amazing and voluminous hair? Yup!

Kate Beckinsale may not have as many Oscars as say, Hilary Swank, but when you look like this and have a perfect family, who cares!

We know it's been scorchingly hot here in LA, but that's no reason to leave your house in nothing but your bloomers!

Kate Beckinsale did just that yesterday, donning a polka-dot tunic over matching lacy bloomers for a shopping trip to Fred Segal yesterday.

And to make matters even worse, she paired the whole costume with motorcycle boots!

Let's hope what Kate and her hubby bought at the trendy store was a whole lot more chic than what she's wearing!

Work it, girl! First we see her leaving a Beverly Hills hair salon in some 80s-inspired gym clothes, and later out and about with hubby Len Wiseman - fierce!

Although she's hit a career slump, Underworld 4 has been announced with ex Michael Sheen rumored to co-star and Len to direct. Hmm, awk much?

Cannes is definitely in full swing with celebs and fashionistas like Penelope Cruz, Javier Bardem, Kate Beckinsale and Naomi Watts stepping out in style at the swanky film festival.

Juror Kate Beckinsale is definitely in the running for our choice for Cannes best-dressed, changing from black sequins at a screening of the film Biutiful into a stunning pale pink Grecian dress for a party later that night.

Pene and Javier, who have only recently stepped out in public as a couple wore matching (boring) black, while Naomi Watts did the same, but forgot to wear a bra! We think we spot a runaway nipple...

Check out our MONSTER gallery of all the celebs partying like rock stars in Cannes last night!

Kate Beckinsale and Indian beauty Aishwarya Rai both donned gorgeous Gucci gowns to walk the red carpet for the Cannes premiere of Il Gattopardo yesterday.

Kate, who sits on the jury of this year's festival, wore a shimmering silk georgette antique white gown while Rai sported a one-of-a-kind magenta georgette gown.

Gorgeous!

Kate Beckinsale and her gorgeous hubby spent the weekend getting groomed at a salon and shopping in Beverly Hills!

Kate, who was already wearing heels that made her taller than her diminutive hubby, changed into even higher heels after shopping!

She literally towers over Len as he walks her packages to the car. Check it out in the video below!

Sleek Hollywood couple Kate Beckinsale and her hot director hubby Len Wiseman attended The Losers premiere after party at the Luckman Plaza on Sunset Tuesday night, along with stars Chris Evans, Zoe Saldana and Jeffrey Dean Morgan.

As always, Kate showed off her fabulous legs. White-hot!