Never one to turn down party invites, Katy Perry was spotted out at the Lulu Guinness 20th Anniversary soiree at the Victoria & Albert Museum on Monday (June 8).

The “Waking Up In Vegas” singer offered up a “peace” sign to photogs covering the event, then making her way inside to mingle with fellow guests including Sophie Ellis Bextor, Jo Wood and the guest of honor, Lulu Guiness.

Meanwhile, Miss Perry recently confessed that she’s addicted to Twittering – leading to pretty much everyone knowing where she is at all times.

“The other night I was in a great Mexican restaurant and so I Twittered — not that I was in this particular restaurant; I was a bit cryptic about which city it was — but there were people outside a minute after I put that out there. I forgot I was broadcasting live. I am addicted to it,” Perry tells.