'Big Brother' took a 14.1% share of the 9pm-10pm audience on Sunday night as viewers tuned in to see Alexanda interrogate Stephanie about her relationship with Mario and tell her that her engagement ring looked cheap. Including Channel 4+1 figures it netted 3.6m viewers and a 15.7% share.
Housemates Mario, Stephanie, Lisa and Luke are all part of a secret mission to convince the other housemates that Mario and Stephanie are a couple and to keep the secret that Mario and Lisa are the genuine couple in the house.
In tonight's episode, which covers Sunday's events, the wedding will be shown and one of the housemates attempts to stop the ceremony by revealing that she knows it is a sham.
Big Brother then confirms that the wedding was a sham and gives the housemates one minute to guess who the real couple is. They guess correctly meaning that the four housemates have failed their secret mission and will be up for eviction this week.
After launching on Thursday with 5.4m viewers, on Friday night the show drew in 3.6m viewers and a 16.3% share of the audience. Including Channel 4+1 figures it attracted 3.9m and a 17.5% share.
On Saturday it dipped to 2.5m viewers and an 11.8% share of the 9pm audience but the audience varied wildly during the programme, beginning with 2.1m and peaking at 3.6m. Including Channel 4+1 it reached 2.9m and a 14.1% share.
E4's 'Big Brother's Little Brother', featuring new presenters Zezi Ifore and George Lamb, attracted 350,000 viewers on Friday night and a 1.8% share of the audience at 7.30pm.
Meanwhile 'Big Brother's Big Mouth' pulled in 393,000 viewers for E4 and a 1.8% share of the 10pm audience.
Last year 'Big Brother' launched with 6.1m on a Thursday night, the Friday show got 3.9m and Saturday pulled in 3.3m.