Ashlee and Pete Wentz Photo by: SDFL / Splash News Online
Ashlee Simpson Becomes Ashlee Wentz | Ashlee Simpson, Pete Wentz
Newly married Ashlee Simpson is changing her name to Ashlee Wentz in honor of her husband, Fall Out Boy Pete Wentz.

"I think that that's something that a woman should do when they're marrying a man," she tells PEOPLE. "It's a tradition that I think is a great tradition."

The singer, whose May 17 wedding featured an Alice in Wonderland-themed reception, says that privately she'll go by Ashlee Wentz and professionally she'll be Ashlee Simpson-Wentz.

Pete Wentz says he left the name change decision to his wife. "These decisions with Ashlee and her name are all completely up to Ashlee," Wentz says. "I want her to do these kinds of things the way she wants to do them."

Still, he admits, he was flattered. "Oh man, I was like upgrade me! You know what I'm saying? The Wentz family, our Christmas card just got upgraded!" he says. "It feels insane. It feels unreal."

Like this story? Click on the Yahoo Buzz! button below to Buzz it up!
This week's cover

On Newsstands Now!

JOSH & FERGIE: ROCKED BY SCANDAL

Did he cheat with a stripper?

Married less than a year, the couple denies an Atlanta woman’s claims that she and Josh had a fling
Note that this week’s cover of PEOPLE may differ regionally

Save $1.00 off this week's issue. Click here for coupon