Avril Lavigne celebrated her last days of being single by inviting her fiancé, Sum 41 singer Deryck Whibley, to join her for her bachelorette bash on June 30. The 21-year-old singer received two sets of black 2Belles panties embroidered with 'The Mrs.' in hot pink, plus a posh bra, panty and camisole set from lingerie company Cherish.

According to an eyewitness, "She was excited, but a little embarrassed."

After opening her presents, Lavigne donned a veil with devil horns and the couple and 20 pals dined at hip Los Angeles restaurant Koi. The group then moved on to celebrity nightclub Lobby where they partied alongside Jessica Alba and Nicky Hilton.

The couple has yet to announce their official wedding date.

- Avril Lavigne pictures
- Sum 41 pictures

(This news article provided by World Entertainment News Network)