She may be months away from giving birth, but first time mom-to-be Minnie Driver is already bracing for those sleepless nights.

“I’m going to be a very tired mother, I’m sure!” Driver told People at the season-two premiere of The Riches in West Hollywood Sunday.

“No, I’m going to be happy,” she corrected. “I’m going to be a happy mother.”

The 38-year-old has a busy couple of months coming up – she’s releasing her album, Seastories in the U.K. and touring Europe, Hawaii and L.A.

But after that, Drivers says, she’ll be logging plenty of pre-baby R ‘n R. “I’m just going to have the summer to be fat and happy,” she said.

Driver announced her pregnancy last week on The Tonight Show with Jay Leno, joked about baby names with Ellen DeGeneres, and said she is four months along – but has not named the father.

The actress, wearing a black, body-hugging Calvin Klein dress and lavender wrap, came solo to Tuesday’s premiere (her first public event since announcing the pregnancy). During the afterparty at the Pacific Design Center’s Red Seven restaurant she laughed with friends and sipped water while munching on appetizers.

On the red carpet, costar Eddie Izzard told People Driver will be a great mom.

“As long as there is one parent there that is giving love, then the kid is going to do great,” Izzard said. “I think she’ll be a good mom because it needs love.”

Added fellow cast member Todd Stashwick: “She’s got a heart as big as the world. I think that could only [benefit] her children.”

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WENN

Actress and musician Minnie Driver confirmed rumors she’s expecting her first child on Thursday’s Tonight Show with Jay Leno.

“Are you pregnant?” Leno asked, after joking about her weight.

“Yes, I am,” she replied. “I don’t know why they call it morning sickness… I am sick morning, noon and night, but it’s a fair trade-off.”

Driver said she likes being pregnant “more than anything else.”

The 38-year-old stars in The Riches on FX and released an album last year.

She has not revealed the father of her baby.

The news was first reported by A Socialite’s Life in January.

The Riches returns March 18.

US

Minnie Driver is auctioning off a $100,000 lunch date as part of an upcoming charity auction. As part of a joint promotional venture between Driver’s hit U.S. TV show The Riches and one of her favorite charities, Oxfam America, Driver is offering to join a fan for a meal.

The actress will put herself on the auction block on eBay.com’s The Riches Charity Auction, which will run for 10 days from March 13th. The winning bidder will get the cash and an opportunity to meet Driver over lunch.

The auction marks a first for eBay.com - the website has never offered up such a large sum of money. The top bidder will also receive memorabilia from The Riches, in which Driver stars with Eddie Izzard.

All proceeds from the winning bid will be donated to Oxfam America. Driver is an ambassador for the charity. Driver isn’t the only star offering herself up for auction; Scarlett Johansson is also hoping to raise cash for Oxfam by offering a fan the chance to accompany her to the premiere of her next movie He’s Just Not That Into You in Los Angeles in June 2009. The Johansson date is currently being auctioned off on eBay.

Colin Firth recently offered up a date to the premiere of his new film Mama Mia! in July.

WENN

Actress Minnie Driver has fueled rumors she is expecting her first child after she was photographed leaving a Los Angeles clinic.

The Good Will Hunting star was spotted outside a doctor’s surgery looking at sonograms with a friend.

According to New York gossip column Page Six, Driver called her boyfriend, Matthew, in England and talked about “getting bloodwork done”.

A source tells the publication she told her pal, “Matthew says I should be quiet so no one hears me.”

A spokesman for Driver has refused to comment.

WENN

Her voice bores me…there’s just nothing exciting about it. Here’s the video for her song, “Invisible Girl”. I made it through about 1/2 before turning it off.