has got a new tattoo following a "girl's night out".
The Canadian singer made the spontaneous decision to visit the Shamrock Social Club tattoo parlour, in Hollywood, on Saturday (12.03.11) to get a safety pin etched onto her neck following a day with her friends.
She wrote on her twitter page earlier in the day: "Girls day!!!!!! Listening to my new record with my girls and catching up ... Love u babeskis. (sic)"
Soon after, she added: "Uh-oh girls day turning into girls night. Should I get a tattoo???? Haha. (sic)"
Throughout the procedure, Avril, 26, kept her fans updated with pictures and dropped hints about the design she was having.
She tweeted at one stage: "Omg..k. Here we go... It's comes in handy all the time, it can hurt you, but at the same time keep you together, safety first! (sic)"
She eventually revealed the design in a picture, adding the caption: "It's a. Safety pin bitches!!!!! (sic)"
Despite her spur-of-the-moment decision to get the body art, Avril had no regrets later.
She wrote on her twitter account: "What a great day with my girlfriends. Hahah. Just being me... Girl time is always necessary. And I got a tattoo. Holy crap hahah. (sic)"
The 'What the Hell' singer has previously revealed she gets tattoos to remind her of fun times in her life.
She said recently: "I like all my tattoos, they all remind me of friendships, a lot of them are matching tattoos with friends. It's a moment in time. Whenever I'm having a really good time I bust out and say 'Let's get tattoos.' "
She has two designs which mirror current boyfriend Brody Jenner's etchings, the word "f**k" on their ribs and lightning bolts on different parts of their bodies.
She also has 'Brody' tattooed under her right breast, while the reality TV star has 'Avril' etched on his arm.
The 26-year-old singer also has two tattoos which she shares with ex-husband Deryck Whibley, and a star inside her left wrist which is identical to one her friend, ex-Evanescence guitarist Ben Moody, had done at the same time.